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University Computing Services Virus-checking & spam-tagging for OTI/UCS e-mail servers
@UCS.fsu.edu This 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 probability of 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 <IFrame> tags and <img> that are thought to be WebBugs. The webbugs are very small images used to track whether a messages has been read and <IFrames> allow various Microsoft Outlook security vulnerabilities to remain unprotected (but are commonly used in Mailing Lists). Additional MailScanner
and filter help available with: Below is the list of the filename and filetype rules that UCS is filtering 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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