TrustLayer Mail | PandaDefense.com

Overview:

TrustLayer Mail is a managed mail-cleaning service guaranteeing 100% malware-free email, as well a series of key features of a great value to any company.

TrustLayer Mail is the managed security service from TrustLayer Technologies designed to guarantee clean and secure email delivery.

TrystLayer Technologies, a member of the Panda Software group, provides the TrustLayer Mail service through service providers (xSPs). They can offer their clients antivirus, anti-spam, content filtering and mail continuity services without having to make major investments in technology or maintenance.

TrustLayer Mail allows Internet providers, telecommunication operators and other service providers to break into the managed security business, offering exceptional added-value to their clients. Trustlayer Technologies provides a mutually beneficial design to integrate its technology and services in xSP equipment and infrastructure.

Instead of companies having to install software in a mail server or add specialized gateway devices, an externalized email cleaning solution can offer an optimum cost-quality relationship, with state-of the -art technologies available at all times and a reduction in unwanted incoming traffic. If such a solution is backed by their usual Internet or communications services provider and offers an SLA guaranteeing 100% virus-free mail and a 7x24 service, it becomes an unbeatable alternative.

TrustLayer Mail has a team of security experts ensuring mail protection, availability and confidentiality without clients having to allocate internal resources, so clients can focus on their core business activates.

TrustLayer Mail Services

TrustLayer Mail is a service designed for service providers such as ISPs (Internet Service Providers), ASPs (Application Service Providers) and telecommunications operators.

It is a 24x7 managed service from Panda Software, guaranteeing clean mail with antivirus, anti-spam, mail continuity and content filtering. It uses TruPrevent™ Technologies, guarantees company email security, stores messages for several days if the mail server crashes, includes a load-balancing system for absorbing traffic peaks and can be easily expanded to cater for up to millions of email accounts.

AntiVirus TL Mail, The Most Complete Autivrus
	TrustLayer offers the most powerful antivirus capabilities, detecting both known and unknown threats with TruPrevent™ Technologies.

AntiSpam Configurable Filtering of Junk Email
	Panda has developed a configurable filter system to adapt to the requirements of all types of users and companies and rid them of junk mail.

Content Filtering Selection of Appropriate Attachments
	The system lets you select the type of attachments that you consider appropriate in line with your company's security policy.

Mail Continuity Solution Against Email Loss
	You won’t lose your mail if your corporate server or communications fail.

Filtering takes place while messages are in transit on the Internet and therefore before they can enter clients' mail servers. TrustLayer Mail scans mail and applies criteria defiened for each mailbox in order to determine the action to take. If the mail is clean it will be sent to the recipient. If a conflict with established policies is detected (because of viruses, spam, etc.), the programmed action will be taken: deleting messages, adding a warning or storing in quarantine.

Quarantine allows suspicious or invalid messages to be stored away from clients' servers for security reasons and prevents junk mail from saturating communications and systems.

Features and Benefits:

TrustLayer Mail doesn't require installation on users' computers, is easily scalable to the number of mailboxes needed by any company and offers a series of key benefits to all businesses:

Benefits:

Reduced costs in resource usage.
Blocking unwanted mail before it enters the corporate network reduces the use of bandwidth and storage capacity.
Reduced personnel costs.
As it is managed and maintained remotely, it reduces the need for mail service management, including traveling to branch offices.
Reduced cost of dedicated hardware and software.
It eliminates the need for hardware or software dedicated to protecting the company's email.
Increased employee productivity.
By removing junk mail, it prevents time lost reading and deleting annoying and unproductive messages.
Predictable investment.
Clients only pay for the number of active mailboxes they have.
Business continuity protection.
Mail is protected even in the event of crashes of company servers.
Information protection.
Using the very latest technologies for combating viruses, spam and any other types of attacks that could compromise corporate data.

Features:

Anti-malware protection.
Using the most advanced preventive protection technologies (TruPrevent). It can detect all types of known and unknown malware content in email. This commitment is backed by an SLA guaranteeing that users will only receive email that is 100% free from malware.
Anti-spam protection.
It combines several anti-spam engines to achieve detection ratios over 98.5%, ensuring end users don't receive spam.
Content filtering.
Lets clients define and enforce company security policy, by establishing what attachments can be received and which should be blocked.
Mail Continuity.
Prevents possible network failures from affecting business continuity. In the event of the failure of clients' servers or networks, mail will still be accessible for several days.
Adaptable to corporate policy.
It monitors inbound and outbound mail to prevent inappropriate or confidential material from entering or leaving the company.
Real-time threat information.
Customizable reports with a web interface for instant information about mail traffic and virus attacks.

TrustLayer Mail Services

TrustLayer Mail is a service designed for service providers such as ISPs (Internet Service Providers), ASPs (Application Service Providers) and telecommunications operators.

It is a 24x7 managed service from Panda Software, guaranteeing clean mail with antivirus, anti-spam, mail continuity and content filtering. It uses TruPrevent™ Technologies, guarantees company email security, stores messages for several days if the mail server crashes, includes a load-balancing system for absorbing traffic peaks and can be easily expanded to cater for up to millions of email accounts.

Antivirus

The TrustLayer Mail service offers the most powerful antivirus with TruPrevent™ Technologies, capable of detecting both known viruses and unknown threats.

Antivirus Engine with automatic signature update.

Heuristic system capable of blocking new viruses and unknown threats.

Configurable notifications about the detected infections.

Programmable virus quarantine of up to 30 days.

Automatic deleting of messages with known viruses and spoof sender.

Complete informs about the filter activity.

SLA (Service Level of Agreement): 100% virus-free guarantee.

AntiSpam

Panda has developed a configurable filter system to adapt to the requirements of all types of users and companies and rid them of junk mail.

Effectiveness: up to 98% of spam can be blocked.

Very low level of false positives.

Multiple rules: Labeling of page header/subject, quarantine, deleting.

Selection of thresholds by domain administrator and user.

Up to 30 days of spam quarantine in the system. Access by administrator and/or users.

Rule and List management with daily updating from the management center.

Configurable administrator reports.

Content Filtering

The system lets you select the type of attachments that you consider appropriate in line with your company's security policy.

Filtering of attachments.

Blocking by extensions (.exe, .mp3...).

Blocking by MIME types (text, video...).

Notifications.

Inclusion of disclaimers in the message.

Mail Continuity (post or mail relay)

You won’t lose your mail if your corporate server or communications fail.

This service stores the mail when a client's server is not available and delivers it once the connection has been restored.

Storage for up to 5 days is guaranteed.

TrustLayer Mail Technology

Antivirus Technology: TruPrevent™ Technologies, with an advanced heuristic engine, detect and block unknown viruses, avoiding the spread of viruses and malicious codes in corporate networks. Technology for combating Internet threats includes detection of vulnerabilities and protection against spyware, hoaxes, jokes, other security threats and the blocking of hacking tools.
Antispam Technology: TrustLayer Mail checks company e-mail using the antispam module, reducing the negative impact of spam on company productivity.
The system allows antispam analysis for the SMTP protocol.

To determine whether a message is spam or not, its heading and body are analyzed in different forms (text, html). After different types of analysis (algorithms), the system will classify the message as either spam or not spam.

It will be possible to configure actions to take, based on the message classification. These actions include marking the subject, redirecting the message to an e-mail address or blocking the message.

It will also be possible to configure white and black lists of addresses and/or domains, so that e-mails whose sender is in this list will not be analyzed or will be classified as spam accordingly.
Mail Continuity technology: Through this service, TrustLayer Mail makes it possible to store company mail when a client server experiences any type of incident. This is achieved by installing high availability redundant MTAs.
Content filtering technology: Content filtering for SMTP mail, which enables the blocking of messages or files according to their MIME extension or type.

Domain administrator console

Makes it possible to register and cancel users, create user groups, include a user in an already existing group etc. The domain administrator also has the following settings options:

Virus: Virus notification settings (sender, addressee, administrator).

Spam:

Configuring filtering levels for "spam" and subsequent action (deleting, redirecting, quarantine or labeling) and "probable spam" (redirecting, quarantine or labeling) for the complete domain.

Simplified settings can be established with predetermined parameters for those thresholds and actions. "Aggressive", "medium" or "permissive" filtering.

Inclusion of domains and accounts in white and black lists applicable to the entire domain. Note: There are more black lists than white lists.

Authorization to individual users for taking spam quarantine related actions.

Authorization to individual users for defining filtering thresholds, or simplified settings, and populating black/white lists, creating individual user profiles. Initial settings for notification periods of messages in quarantine to users.

Disable/delete personal user profiles.

Content filtering:

Configuring extensions and sizes to be blocked, and subsequent actions (delete, redirect, quarantine).

Settings for notes/banners.
Selection of preconfigured dictionaries to be used.

Creation of bespoke dictionaries.

Notification settings in case messages are blocked.

Authorization to individual users for changing notification criteria.

The domain administrator will access the following reports in their console: List of messages in virus quarantine, list of messages in spam quarantine, list of messages blocked by content filtering, period and domain reports, system reports, virus filtering reports and spam reports.

User Console

This is a web system which can be used to review e-mails in quarantine and take any action, configuring its profile and checking the activity reports in its account. The settings options are as follows:

Virus: Virus notification settings in e-mails.

Spam, if authorized by the domain administrator:

Configuring filter levels for "spam" and subsequent action (deleting, redirecting, quarantine or labeling) and "probable spam" (redirecting, quarantine or labeling). Simple settings can be established with predetermined parameters for those thresholds and actions. "Aggressive", "medium" or "permissive" filtering.

Inclusion of domains and accounts in white and black lists.

Content Filtering Configuring notifications, if authorized by the domain administrator.

How does TrustLayer Mail work?

TrustLayer Mail is a solution which guarantees mail cleaning, preventing the entry of viruses, unwanted mail (spam) and unsuitable contents in companies. In contrast to solutions based on software filtering or appliances installed in the company, it is a subcontracted service (managed by third parties and outside the company).

A managed service offers maximum protection, since malware is increasingly complex and fast-changing.

TrustLayer Mail is a managed service which offers the following advantages:

Comprehensive mail filtering, making it possible for the end user to subscribe on a mailbox to mailbox basis to the service required: antivirus, antispam, content filtering.
Availability and cleaning of mail guaranteed through SLA.
Configurable services from “by default” to management of white/black lists, filtering criteria, reports etc by users and administrators.
Messages are stored for several days if the mail server crashes, delivering them once it has been restored.
Process time (latency) almost imperceptible.
Quarantine for keeping dangerous or unwanted messages outside the company, thereby reducing the consumption of its resources (bandwidth etc).
Load balancing system for absorbing traffic peaks and for enabling simple expansion.
Scalable to millions of mail accounts.
Redundant and high availability settings.
Reports and logs adapted to business needs and legal obligations.

Filter Schema

When any user sends an e-mail to the domain mail account of a client of the service, the sender's mail server verifies the domain address, accesses the DNS logs and finds that the filter system address appears for this domain. The filtering system processes the e-mails and sends to the client server those e-mails which comply with the established requirements, keeping in quarantine any which contain viruses, spam or contents that fail to observe the mail use policy established by the client.

Outbound mail from the client's server is sent to the filter system, and once it has been verified as clean, it is sent to the recipients' servers.

Mail can be modified to include notes (such as an indication that the mail has been filtered and that it is spam) or messages can be issued to warn of abnormal situations: for example, warning the domain administrator of the detection of a virus.

Mail stored in quarantine can be reviewed, released or deleted by those users that the client gives the corresponding permissions (administrators or users).

Provision Schema

The infrastructure of the TrustLayer Mail service is located in Telefónica’s Managed Data Centers. These centers have the best environmental and security conditions to guarantee maximum availability and optimum response times. Security conditions are enhanced by independent refrigerated zones and protection against seismic movements. The centers have the most advanced security systems, including the latest fire protection installations, movement sensors, 24x7 access control and CCTV cameras and alarms.

With these installations, we are able to offer the highest levels of stability, supported by numerous redundant network subsystems, a multiple backup environment, uninterrupted power supplies and the best and most experienced technicians at Telefonica.

Support and Services:

TrustLayer Mail is a comprehensive mail filtering service. This includes Service Availability Management, Filtering Effectiveness Management, Threat and Security Management and Client Support processes.

Availability Management.
Constantly monitors the status of servers and applications and takes action in case of any incidents, in order to make sure that the filtering service is always available.
Effectiveness Management.
Keeps databases of virus signatures, spam filtering rules, black lists etc always up-to-date, monitoring filtering performance parameters and guaranteeing the updating of operating systems and applications.
Threat and Security Management.
Monitors general client mail threats (new viruses through PandaLabs, virus alerts/outbreaks, DHA), such as security threats to the filtering and cluster system (intrusion attempts, hacks...).
24x7 Customer support.
Rapidly deals with queries or problems reported by clients.

Screenshots:

Anti-Spam Activity
(Click enlarge)

Filter Activity
(Click enlarge)

FAQ:

Services FAQ:

AntiVirus

How accurate is the virus filtering system?

The TrustLayer Mail service detects both known viruses (through its signature engine) and new threats by incorporating the latest proactive technologies and PandaLab's direct management of suspicious files. Together with quarantine management, this enables absolute protection against viruses, worms and Trojans. We are committed to offering a 100% virus-free service.

What virus protection guarantees does TrustLayer offer?

With respect to the antivirus filtering service, TrustLayer offers a 100% virus-free contractual guarantee.

What virus detection system/engines does it use?

The TL Mail service uses the Panda Software antivirus engine and is able to integrate other manufacturers' AV engines. It also uses TruPrevent™ Technologies enabling the identification of unknown malicious codes.

What is the update frequency of the antivirus engine?

The antivirus engine is updated automatically every time new signatures are released by Panda.

What happens to messages that contain viruses?

Messages with viruses are stored in the system's quarantine for up to 30 days, except known mass-mailing worms that spoof the sender's identity which are deleted directly, with only the log being kept for statistical purposes. After the predetermined time in quarantine, the message is automatically deleted.

Attachments thought likely to include a virus, and which do not match known patterns, are sent to PandaLabs for detailed analysis (if the client has subscribed to this AV Service), taking action (releasing or confirming its infected file status) in normally under 24 hours.

How can messages be seen in virus quarantine?

The system can be configured so that the addressee can see the message log in their virus quarantine, although they won't be able to access the messages. The log can include the sender (From), addressee (To), subject, date and time, as well as the name of the virus detected or reason for quarantine.

Can a message be released in the virus quarantine? Who does this?

Mail stored in the virus quarantine can be reviewed by domain administrators, who decide whether to delete or release them (sending them to the message addressee or redirecting them to a determined account) under their responsibility.

Does the system detect other types of attacks, for example, DHA, intrusion, etc.?

By combining tools and procedures, the TrustLayer Mail solution protects against directory, denial of service, intrusion attacks etc.

Does the system send notifications if it detects a virus? If so, to whom?

The system can configure different notifications if it detects a virus: to the addressee or administrator. Notifications can be removed for cases of mass mailing worms with spoofed sender addresses.

Content Filtering

What is content filtering?

The content filtering system is able to establish a series of policies for correct e-mail use. On the one hand, it can filter messages with attachments that the company considers are not work related (for example MP3 music files or movies in Divx formats). In any case, the domain administrator is able to configure the system to take appropriate action based on the policy established by their company: delete attachments, delete messages, notify the sender etc.

Why is it important?

In some countries the failure to take necessary measures to protect employees from offensive contents (sex, racism, insults, etc.) may mean a company is legally liable. Furthermore, unsuitable or unrelated work content may consume a significant amount of resources (memory, bandwidth...) and reduce productivity, increasing a company's costs.

What are the legal implications of filtering content?

This will depend on the legal situation in each country. In general, the company does not run any risk if it establishes an e-mail use policy and communicates this to all its employees.

How is it configured?

The extensions and the MIME types for filtering can be established in order to filter attachments. The administrator must configure the actions to be taken in case a message is categorized as unsuitable or includes unacceptable files.

AntiSpam

What is spam? Why filter it?

Nowadays, spam refers to junk mail or unsolicited commercial mail which floods e-mail systems around the world. Spam has grown at a dizzying rate over the last few years and is now a serious inconvenience for companies, since it collapses their IT systems and reduces employee productivity. According to Ferris Research (a specialist consultancy in this field), the cost of spam to companies in 2003 was $10 billion.

Who sends spam?

Spam is sent for financial motives. Different studies have shown that there is up to a 6% reply rate to junk mail, which results in an economic benefit for the spammer. According to the article "You CAN-SPAM" published in Internet News in 2004, a spammer can send 240 million messages in 4 working days with subsequent revenue ranging from $40,000 to $1 million. Although 40% of spam comes from the United States, other countries are now bolstering the trend.

How accurate is the spam filter?

The spam filtering system can detect between 92% and 99% of spam. The main problem is that spam is interpreted differently by different people. Widely distributed news or information bulletins may or may not be considered as spam. Increasing the filtering accuracy results in an increase in the number of false positives (messages classified by the system as spam, but not so by the user), as a result of which a balance is required. It is possible to obtain a level of false positives of less than 1 in 100,000 in an accuracy range of 92% to 95%.

When including addresses in their white and black Lists, users help to improve filtering accuracy.

What guarantees does TrustLayer Mail offer for spam filtering?

When it comes to spam filtering, and as a result of its continually changing nature, Panda Software cannot contractually guarantee the effectiveness of the system. TrustLayer Mail uses the most advanced technologies available and expert personnel 100% dedicated to combating spam, updating filtering rules, lists of known spammers, tables of unreliable addresses etc to guarantee the highest levels of detection at all times.

What spam filtering system does TrustLayer Mail use?

The spam filtering system is based on MailShell Technology, also including blacklists managed by Panda Software. Through artificial intelligence procedures, the system compiles and runs more than 300,000 checks to determine whether the message is spam or not, executing thousands of calculations in a fraction of a second. It is checked whether the message has been sent out en masse studying its similarity with other messages, and a message identifier (fingerprint) is created. It is then verified whether the sender or the IP address from which the message originates is of a dubious nature. The message's structure, format and content is later analyzed (including hyperlinks) to determine whether the majority of people consider its content suitable. Finally, tricks normally used by spammers for reducing the cost of sending messages and avoiding anti-spam filters are searched for.

How often is it updated?

The system is automatically updated every day, with the possibility of including changes in the rules and lists as they are produced by the GNOC. The GNOC can also alter the automatic updating periods to improve the system's effectiveness.

Is spam sent by the TrustLayer Mail clients filtered?

Outbound messages are not filtered by the anti-spam system. However, the GNOC operations center can detect mass-mailing of messages from clients’ mail servers and report these situations, in case these actions are due to inappropriate use of services or systems (for example, the server is being used or hijacked by spammers without the client’s knowledge).

What happens to messages that contain spam?

The domain administrator can determine the rules to be applied in filtering spam. These rules make it possible to configure on a user by user basis what actions should be taken with the message according to the spam analysis score. These actions include deleting the message, storing it in a quarantine system or marking its file header or heading with a particular text.

How can the end user see the messages in spam quarantine?

The end user can access their message quarantine through the Web console or by configuring the system to periodically send a summary message of the quarantine status with a link to the corresponding TrustLayer Mail Web console.

Can a message be released in the quarantine? Who does it?

Messages in the spam quarantine can be released (sending to the original recipient or to another mail account) by the domain administrator or recipient (the user to whom the message is sent) if they are authorized for this.

Technology FAQ:

What type of clients need a filtering service?

Clients are mainly companies. For them, mail security is likely to be critical to their business, due to the risk of receiving viruses or malicious codes and the need for guaranteeing its availability. Furthermore, the cost of managing an increasing volume of unwanted mail (spam) makes the business case for a filtering system more convincing. Many countries are also establishing regulations which means companies have to observe certain mail management practices (avoiding unsuitable content of a sexual, racist nature etc, guaranteeing the confidentiality of personal data, storing mails for certain periods...). Many countries neither have the knowledge nor the resources to manage this filtering by themselves, with the most logical option being to give the job to a service provider.

In addition, many consumers (private users of mail) require the filtering service, and a significant proportion is prepared to pay for a quality service which offers them certain guarantees.

Why a managed service?

Malware (viruses and other codes and malicious programs) is constantly trying to defeat protection solutions with increasingly sophisticated attacks and more rapid propagation. Mail is the main source of virus propagation (more than 85% today), and although clients can install software in their mail server or add appliances (specialized equipment for filtering and cleaning mail or Internet traffic), the managed solution offers greater filtering quality and effectiveness by having multiple technologies and a constant service available for updating systems continuously. In addition, the managed solution enables the storage of e-mails with viruses, spam or suspicious content in quarantine away from the client's systems. The managed solution offers the best experts, assuring mail security, availability and confidentiality without having to allocate internal resources, so that each company can focus on its own business activities.

What services are included with TrustLayer Mail?

TrustLayer Mail is a comprehensive mail filtering service. This includes Service Availability Management, Filtering Effectiveness Management, Threat and Security Management and Client Support processes.

Availability Management constantly monitors the status of servers and applications and takes action in case of any incidents, in order to make sure that the filtering service is always available.
Effectiveness Management keeps databases of virus signatures, spam filtering rules, black lists etc always up-to-date, monitoring filtering performance parameters and guaranteeing the updating of operating systems and applications.
Threat and Security Management monitors general client mail threats (new viruses through PandaLabs, virus alerts/outbreaks, DHA), such as security threats to the filtering and cluster system (intrusion attempts, hacks...).
24x7 Customer support rapidly deals with queries or problems reported by clients.

What happens if a cluster server crashes?

The system has fail-over procedures, which means if a server fails others can assume its function. In case of any block in the software, the system watchdog will reboot the server. If a hard disk crashes, it can be replaced on the fly and the information will be recovered by structuring redundant disks. If the administration server fails, the system will continue filtering with the pre-established settings before the system failure.

What are the possibilities of losing a client's mail?

Practically none. If the cluster is not active, (for example due to a power loss), the sender will continue trying to send the message according to their retry policy until they manage to connect to the system. If the cluster is active, and the message has been received (notifying the sender), it will be stored in a redundant hard disk until delivery to the client mail server.

How precise is the virus filtering?

The TL Mail service detects both known viruses (through its signature engine) and new threats by incorporating the latest proactive technologies and PandaLab's direct management of suspicious files. Together with quarantine management, this enables absolute protection against viruses, worms and Trojans. We are committed to offering a 100% virus-free service.

What is the update frequency of the antivirus engine?

The antivirus engine is updated automatically every time new signatures are released by Panda.

What happens to messages that contain viruses?

Messages with viruses are stored in the system's quarantine for up to 30 days, except known mass mailing worms spoofing the sender's identity which are deleted directly, with only the log being kept for statistical purposes. After the predetermined time in quarantine, the message is automatically deleted.

Attachments thought likely to include a virus, and which do not match known patterns, are sent to PandaLabs for detailed analysis (if the client has subscribed to this AV Service), taking action (releasing or confirming its infected file status) in normally under 24 hours.

Does the system send notifications if it detects a virus? If so, to whom?

The system can configure different notifications if it detects a virus: to the sender, addressee or administrator. Notifications can be removed in cases of mass mailing worms with spoofed sender addresses.

What is spam? Why filter it?

Nowadays, spam refers to junk mail or unsolicited sales mail which floods e-mail systems around the world. Spam has grown at a dizzying rate over the last few years and is now a serious inconvenience for companies as it collapses their IT systems and reduces their employee productivity. According to Ferris Research (a specialist consultancy in this field), the cost of spam to companies in 2003 was $10 billion.

How accurate is the spam filtering system?

The spam filtering system can detect between 92% and 99% of spam. The main problem is that spam is interpreted differently by different people. Widely distributed news or information bulletins may or may not be considered spam. Increasing the filtering accuracy results in an increase in the number of false positives (messages classified by the system as spam, but not so by the user), as a result of which a balance is required. It is possible to obtain a level of false positives of less than 1 in 100,000 in an accuracy range of 92% to 95%.

When including addresses in their white and black Lists, users help to improve filtering accuracy.

What spam filtering system does TrustLayer Mail use?

The spam filtering system is based on MailShell Technology, also including lists, tables etc managed by Panda Software. Through artificial intelligence procedures, the system compiles and runs more than 300,000 checks to determine whether a message is spam or not, executing thousands of calculations in a fraction of a second. It is checked whether the message has been sent out en masse studying its similarity with other messages, and a message identifier (fingerprint) is created. It is then verified whether the sender or the IP address from which the message originates is of a dubious nature. The message's structure, format and content is later analyzed (including hyperlinks) to determine whether the majority of people consider its content suitable. Finally, tricks normally used by spammers for reducing the cost of sending messages and avoiding antispam filters are searched for.

How often is it updated?

The system is automatically updated every day, with the possibility of including changes in the rules and lists on a daily basis, as they are produced by the GNOC. The GNOC can also alter the automatic updating periods to improve the system's effectiveness.

Is spam that is sent by clients filtered?

Outbound messages are not filtered by the antispam system. However, the Operation Center can detect the mass sending of messages from the mail servers or their clients, informing of these situations, in case of any inappropriate use of services or systems (for example, that this server is being used or "hijacked" by spammers without the client's knowledge).

What happens to messages that contain spam?

The domain administrator can determine the rules to be applied in filtering spam. These rules make it possible to configure user by user what actions should be taken with the message according to the spam analysis score. These actions include deleting the message, storing it in a quarantine system or marking its file header or heading with a particular text.

How can the end user see the messages in spam quarantine?

The end user can access their message quarantine through the web console or by configuring the system to send a summary message of the quarantine status periodically, with a link to the relevant web console.

Can a message be released in the quarantine? Who does it?

Messages in spam quarantine can be released (sending to the original addressee or another mail account) by the domain administrator or addressee (the user to whom the message is sent) if they are authorized for this.

What is content filtering?

The content filtering system is able to establish a series of policies for correct e-mail use. On the one hand, it can filter messages with attachments that the company considers are not work related (for example MP3 music files or films in Divx formats). In any case, the domain administrator is able to configure the system to take appropriate action based on the policy established by their company: delete attachments, delete messages, notify the sender etc. Text analysis will be included in future versions by referring to certain predetermined dictionaries to decide whether the message is acceptable or not.

Why is it important?

In some countries the failure to take necessary measures to protect employees from offensive contents (sex, racism, insults etc) may mean a company is legally liable. Furthermore, unsuitable or unrelated work content may consume a significant amount of resources (memory, bandwidth etc) and reduce productivity, producing extra costs for the company.

What are the legal implications of filtering content?

This will depend on the legal situation in each country. In general, the company does not run any risk if it establishes an e-mail use policy and communicates this to all its employees.

How is it configured?

The extensions and the MIME types for filtering can be established in order to filter attachments. The administrator must configure the actions to be taken in case a message is categorized as unsuitable or includes unacceptable files.

Documentation:

Download the TrustLayer Mail Datasheet (PDF).