1. Author: Security features The Axigen Team Axigen Messaging

2. Axigen is an integrated email, calendaring & collaboration platform, masterfully built on unique mail server technologies, for increased speed & security: Developed by AXIGEN Messaging, leading vendor in the messaging industry Designed to meet the communication needs of businesses of all sizes & Service Providers One of the world’s top messaging platforms, offering: Business-class email (from Outlook, Thunderbird, WebMail etc) Groupware & collaboration (Calendars, Tasks, Notes, Outlook Connector) Synchronization with mobile devices (e.g. Nokia, iPhone, BlackBerry) Advanced security, effortless administration & server operations Optimized hardware usage (save up to 50%) Flexible licensing (pay for what you use, free accounts with every solution) Multi-platform architecture (available on 32-bit & 64-bit Windows & Linux OS) About Axigen

3. Mail server security Axigen Security Overview Axigen guarantees secure reception, transit & delivery of email & protection for your confidential data. Our messaging platform comes with an extensive, customizable security toolset: Authentication / Encryption Multi-layer Access Control (firewall-like rules) SPF & DomainKeys Compliance Blacklisting / Whitelisting / Greylisting Country Filtering, DNS Checks & Blacklists Identity Confirmation System Message Acceptance / Sending Policies Anti-Impersonation & Password Expiration Policies For extra email protection, Axigen can integrate with virtually any commercial security application.

4. Mail server security Axigen Security Benefits & features Complete Privacy Protection Encrypted communication on messaging & managing services Guarantee secure data transmission over the network & advanced privacy leveraging on Axigen’s communication protocols that include SSL/TLS (and START-TLS) encryption technologies. Advanced password management Restrict users from setting simple passwords via password enforcement policies (minimum password length, required sets of characters etc.). Smart Identity & Access Management Authentication Multiple user-authentication mechanisms Reduce the risk of unauthorized connections thanks to CRAM-MD5, LOGIN, PLAIN, DIGEST-MD5 & GSSAPI methods (in this order), available for client authentication. Certificate-based server authentication – using server SSL server certificates. Built-in DK / DKIM signing Axigen has the DomainKeys & DomainKeys Identified Mail technologies built in, for increased overall reliability, enhanced performance of validating sender’s address or email’s integrity & faster creation of outbound signatures.

5. Mail server security Axigen Security Benefits & features Networking Access Control Multi-layer access control (firewall-like rules) To stop spammers & prevent DOS attacks, Axigen has a built-in Firewall at the application (TCP listener) level that allows you to control connectivity parameters. Country IP filtering Based on an IP-to-country database, you can block all emails coming from untrusted countries. Flow control Define flow control restrictions in addition to the access control rules, in order to prevent server & storage overload, as well as protect the server from DDos attacks. HTTP redirects to secure ports – for WebMail & WebAdmin services. Mailbox Access Control Anti-impersonation Enforce user authentication & prevent impersonation attempts from local accounts. Authorization Set hierarchical access control of users/administrators to mailboxes & folders or to server’s resources, define reserved recipient names or temporary aliases.

6. Mail server security Axigen Security Benefits & features Highly-efficient Information Processing Peer-based Filtering SPF filtering Axigen implements a standard-based Sender Policy Framework verification module for sender validation. DNS checks & DNSBL You can validate sender IPs against a selected list of DNSBLs (DNS Blacklists) in order to block emails or skip this validation for custom defined IP Ranges. Identity Confirmation Axigen Identity Confirmation © is basically the implementation of a Challenge / Response-based anti-spam method & enables users to effectively block unwanted messages from reaching their inbox. Blacklists & Whitelists Permanently reject emails coming from untrusted senders / accept emails coming from trusted sources via blacklists / whitelists defined at server level & further refined by the users from the WebMail interface. Greylisting This feature enables Axigen to automatically reject messages from unknown senders / IPs with a temporary error message, thus reducing the amount of spam received.

7. Mail server security Axigen Security Benefits & features Advanced Filtering Filtering of RPOP incoming messages All email messages retrieved from external accounts in the users’ mailboxes, via the RPOP service, are passing through Axigen's processing queue. Sieve-based filtering – applied by administrators on multiple levels (server-wide, domain-wide, on accounts in a class of accounts, or on a single account only), or by users on their accounts. Milter-based filtering – built-in support for calling an external Milter-compliant module. Message acceptance policies & message relay control – performed by a built-in module. Quarantine – for storing messages detected by an AntiVirus as suspicious or infected. Message Routing Policies You can assign different outbound IP addresses to each domain – blacklisted IPs will only affect the associated domain & not other domains operating on the same server.

8. Mail server security Axigen Security Benefits & features Content Filtering AntiVirus filtering The Axigen Advanced Filtering System allows the you to define a set of filters & priorities at server, domain or user level, offering unparalleled flexibility to setup company security policies. AntiSpam filtering After applying the built-in anti-spam methods, the remaining traffic is further taken through a content filtering process & Bayesian filtering. For extra email protection, you can extend Axigen's standard ClamAV & SpamAssassin defensive tools by integrating any of the available commercial Antivirus & AntiSpam apps. Integrating Axigen with security applications can be achieved through: – The Milter protocol (e.g. Kasperky, AVG, ClamAV, Symantec); – External filters – developed as external components of Axigen (e.g. Amavis, AVG, SpamAssassin); – Integrated filters – a dedicated integration protocol that brings significant benefits in terms of reliability, configuration & speed (e.g. the Axigen-Kaspersky solution); – HTTP protocol – a particular case for the integration with the Commtouch AntiSpam technology.

9. Extra Security 3 rd party AntiVirus / AntiSpam apps Further more, get superior defense via Axigen’s extra security add-ons: Embedded Kaspersky AntiVirus & Kaspersky AntiSpam Axigen offers premium, scalable defense against virus & spam threats, by leveraging on Kaspersky Lab's advanced malware detection engine. *Available for the Business Messaging & SP Messaging solutions. Click here Click here to read more about Axigen’s integration with Kaspersky. Commtouch Real Time AntiSpam Protection To prevent Spam outbreaks the minute they occur, Axigen integrates Commtouch's award winning online service as an additional AntiSpam layer. *Available for the Free Mail Server, Business Messaging & SP Messaging solutions. AVG AntiVirus & AntiSpam Protection Axigen provides businesses with a higher level of protection against multiple malware threats thanks to AVG AntiVirus & AntiSpam. *Available for the Free Mail Server & Business Messaging solution. Mail server security

10. Extra Security Example of Axigen - Kaspersky integration architecture Mail server security

11. "Axigen's software is a comprehensive and scalable product that's well worth consideration by any organization looking to operate its own mail server." "To its credit, Axigen added new features at a rapid pace this past year [...] Well- designed and easy to use, Axigen's latest Web mail offering delivers impressive out-of-the-box productivity for end users [...] Axigen Mail Server delivers a comprehensive, turnkey mail server in a DIY world." "If you ask us which of the test candidates was out favorite, we would have to go for the Axigen Mail Server. [...] If you are looking for a good mail server with excellent WebMail support, you will be very happy with the Axigen Server." Axigen in the press "An innovative messaging solution [...] offering important premium features." "A professional email server with Web interfaces for both administration and user mail." "The Axigen Mail Server performance is outstanding. [...] the license model makes sense too and it’s affordable. The ROI model ends up being very compelling."

12. See Axigen at work! Ask for a demo! Download a product kit & test Axigen for 30 days: http://www.axigen.com/mail-server/download/ Setup a free email account & test the Axigen Webmail: http://www.axigenmail.com Test Axigen’s Web administration console – live demo: http://www.axigen.com/mail-server/demo/ Contact us: +40-21-303-2080 international.sales@axigen.com http://www.axigen.com/about-us/contact/