May 26, 2018

Milter based anti-spam and anti-virus filtering program

MIMEDefang is a program for inspecting and modifying e-mail messages as they pass through your mail relay. MIMEDefang is written in Perl, and its filter actions are expressed in Perl, so it’s highly flexible. Here are some things that you can do very easily with MIMEDefang

Delete or alter attachments based on file name, contents, results of a
virus scan, attachment size, etc.

Replace large attachments with links to a centrally-stored copy to ease
the burden on POP3 users with slow modem links.

Add boilerplate text to e-mail messages.

Customize filter rules based on domain, user-name, relay machine, etc.

Reject unacceptable messages, where you define what "unacceptable" means.

Add or delete recipients for a message.

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