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

 

I like to reject messages based on their attachments file extensions.
I assume this can be best done with a milter? Any recommandations?

 MIMEDefang can handle that.
This describes the MIMEDefang stuff.
https://www.axigen.com/knowledgebase/How-to-Configure-and-Integrate-Axigen-and-MIMEDefang-to-Block-Attachments-by-File-Extension_340.html
 

I was just about to give this a try and on el9 this has 116 package dependencies ~260MB. Is there not some smaller solution for hanling some file extensions? :)