Email - Milter (mail filter)


A milter is an extension to the mail transfer agents (MTA) Sendmail and Postfix.

“milter” is a portmanteau of “mail filter” and refers to a protocol and API for communicating mail traffic information between MTAs and mail filtering plug-in applications. It was originally invented at Sendmail, Inc. but has also been adapted to other MTAs.

Documentation / Reference

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