To disable use the following in the virus.cfg

ALLOWVULNERABILITY     MIMESEGMIMEPOST

Please be aware that emails that are triggering this do have the vulnerability, even though they may be good emails the vulnerability does exist if it is being stopped by Declude.

The other way to do this is to allow vulnerabilities from specific senders who you can trust but have this problem by using the following in the virus.cfg

ALLOWVULNERABILITIESFROM   example@example.com
What is MIME segment in MIME postamble' Vulnerability ?

Outlook 'MIME segment in MIME postamble' Vulnerability: 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.