User manual AVIRA ANTIVIR MAILGATE

[. . . ] User Manual Avira AntiVir MailGate | MailGate Suite www. avira. com Contents 1 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 2 The Structure of the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 3 Signs and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 4 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2. 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. 2 Modules and Operating Mode of Avira AntiVir MailGate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2. 3 Licensing Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. 4 System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3 Milter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3. 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3. 2 AntiVir MailGate (Milter Mode) Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3. 3 AntiVir MailGate (Milter Mode) Integration in Sendmail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] ExposeSenderAlerts LOCAL Sending alerts to postmaster: Sends alerts about viruses or unwanted programs to the postmaster. ExposePostmasterAlerts YES Warning recipients: Name or email address of the recipients to be warned (if a virus/unwanted program is detected in an email): AlertsUser AvMailGate or AlertsUser AvMailGate@domainname Expose Postmaster Alerts AlertsUser AddStatus InBody Status information in email body: If the setting is NO, the email contains no additional information (default): AddStatusInBody NO If the setting is YES: If a file named body-state exists in the template subdirectory of the program, the text from this file is inserted in the mail (see Report Templates Configuration ­ Page 48). AddStatusInBody could also take the name of a file. In this case, the contents of the file are added. MaxMessage SizeStatus Status text: If the option AddStatusInBody is set to YES, no status text is added to an email that exceeds the given size value. The size can be specified in megabytes (MB), kilobytes (KB) or bytes. Default: MaxMessageSizeStatus 0 Values larger than 2000MB (2GB) are not allowed. ForwardAll EmailAsMIME Forwarding emails as MIME (not in milter mode): Even if not in MIME, emails can be transformed into MIME emails. They have a MIME header with content type: text/plain, content disposition: inline and content encoding: 7 bit or 8 bit. "Encoding" depends on the original email. If the setting is NO, non-MIME emails are sent without further processing. Avira GmbH Avira AntiVir MailGate 36 Configuration If the setting is YES, non-MIME emails are transformed into MIME emails. ForwardAllEmailAsMIME NO ScanInArchive Scan in archives: If the setting is NO, the archives are not scanned for viruses/unwanted programs. If the setting is YES, all files in archives are unpacked and scanned, depending on the settings for ArchiveMaxSize, ArchiveMaxRecursion and ArchiveMaxRatio. ScanInArchive YES Archive MaxSize Maximum unpacked size of archived files: There are some archived files that have useless content but intentionally expand to an "irrational size" when unpacked in order to slow down the computer. This parameter avoids unpacking such archive files. If the setting is 0, all archived files are unpacked, whatever their size. If the set value is >0, all archives that do not exceed the given value (in bytes) are unpacked and scanned. e. g. : 2KB (2 Kilobytes), 3MB (3 Megabytes). ArchiveMaxSize 0 ArchiveMax Ratio Blocking "mail bombs": Blocks so-called "mail bombs" with a very high compression ratio. You can set the maximum difference between packed and unpacked file size. The zero value deactivates this option (not recommended). ArchiveMaxRatio 150 ArchiveMax Recursion Maximum archive recursion: If the setting is 0, recursive (nested) archives are unpacked, whatever their recursion depth. If the set value is >0, all archives that do not exceed the given recursion depth are unpacked. ArchiveMaxRecursion 20 Block Suspicious Archive Blocking emails with suspicious archives: If activated (YES), this option blocks archives that exceed one of the settings for ArchiveMaxSize, ArchiveMaxRecursion and ArchiveMaxRatio. If the option is deactivated (NO), such archives are forwarded, disregarding the settings for ArchiveMaxSize, ArchiveMaxRecursion and ArchiveMaxRatio. [. . . ] The name for programs that do not directly harm the computer, but are not wanted by the user or administrator or have been installed without their consent. These can be backdoors (BDC), dialers, jokes and games. A file with known signatures for viruses and unwanted programs. In many cases it is sufficient for an update to load the most recent version of this file. Unwanted programs VDF (Virus Definition File) 9. 2 Further Information You can find further information on viruses, worms, macro viruses and other unwanted programs at http://www. avira. com . Avira GmbH Avira AntiVir MailGate 65 Appendix 9. 3 Golden Rules for Protection Against Viruses Always keep boot floppy disks for your network server and for your workstations. [. . . ]