[Mailman-Users] Content Filtering Scrubs PDF Attachment

[Stephen J. Turnbull]

Brad Knowles writes:

 > However, do keep in mind that spammers have recently latched onto the 
 > fact that most people do seem to let *.PDF files through, although 
 > I'm not sure what MIME type these messages are being tagged with.

FWIW, in a sample of 10 recent .pdf spams, all had extension ".pdf"
and Content-Type "application/pdf", with disposition "inline".
(However, these may all be the same spammer for all I know, I don't
read them.)

Very standards-conforming spammers.