"This vulnerability occurs when it appears as though a MIME segment is occurring after the end of the MIME body (specifically, a MIME segment with a boundary other than the one specified appears in the MIME postamble).
Outlook may see this as an attachment. Although technically valid, there is no legitimate reason for an E-mail to be sent like this". In other words, it's a flaw in Outlook how it handles the case when a MIME segment is not terminated with the same string as in the postamble. A virus scanner might decode the MIME structure correctly - while Outlook will treat this as a separate attachment. This allows a potential virus author to sneak a "hidden" attachment to Outlook, past any well-behaved virus scanner. So you're currently blocking (likely valid) emails, because they are formatted in a way that COULD be used by someone to send a virus. From: [email protected] [mailto:[email protected]] On Behalf Of Scott Fosseen - Prairie Lakes AEA Sent: Monday, August 24, 2015 2:51 PM To: [email protected] Subject: [MBF] Outlook Virus Declude Virus v4.12.05 caught the [Outlook 'MIME segment in MIME Postamble' Vulnerability] virus in [No attachment] from [email protected] <mailto:[email protected]> to: usermailto:[email protected]. I am getting this error from this specific domain. Any suggestions.
