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From: Grant Taylor <gtaylor@tnetconsulting.net>
Newsgroups: comp.mail.sendmail
Subject: Re: best practice removing/rejecting message having files with
 specific extensions.
Date: Fri, 24 May 2024 20:46:41 -0500
Organization: TNet Consulting
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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. . . .