We currently run MailScanner/Spam Assassin to scan all incoming email for viruses and spam.: The MailScanner setup blocks the delivery of e-mail messages with viral payloads, attachments containing certain proscribed file types and attachments with certain proscribed filename extensions. Also, each e-mail message is processed by SpamAssassin and, depending on the total score assigned, is handled accordingly. The prefix {Spam?} is added to the contents of the Subject: header line of mail that has a probabilityof being spam, and mail that has a high certainty of being spam is deleted without being delivered. The prefix {Disarmed} is added to the contents of the Subject header line of mail that in which MailScanner has disarmed' certain HTML tags. The tags that are impacted are tags and
Below is the list of the filename and filetype rules that are filtered out due to possible virus infection: Filename rules: Files with very long filenames (over 150 characters) Filenames that contains lots of whitespace (over 10 characters in a row) Filenames trying to hide its real extension by adding a CLSID (e.g. {testhta.txt.{3050F4D8-98B5-11CF-BB82-00AA00BDCE0B})
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