Re: best practice removing/rejecting message having files with specific extensions.

On 5/24/24 06:23, dl8fbh@dl8fbh.ampr.org wrote:

procmail

Removing the files w/ specific extensions with the procmail LDA after accepting the message is different than rejecting them during SMTP time.
I suspect that it's possible to tune SpamAssassin and / or ClamAV to object to the file extensions and have the milter reject the message during the SMTP transaction.  Though that's predicated on configuration using them.
There's probably also a way to create a custom rule that will cause Sendmail to reject it directly.  There are probably some guides on fighting spam from the mid-to-late '90s that may have information on how to do that.
--
Grant. . . .