Editing Procmail (section)

== Criticism ==

By default, procmail will "bounce" undeliverable mail back to the sender, or discard it entirely.  A mistake in the config file can result in all mail being rejected or discarded.

The configuration file format is sometimes regarded as cryptic.

procmail is not well-suited for processing mail involving [[Multipurpose Internet Mail Extensions]] (MIME).  It cannot decode or recognize MIME-specific headers or [[internationalization|international characters]].

For approximately ten years, procmail was not maintained, and multiple serious security vulnerabilities<ref name="cvedetails-procmail"/> were discovered in the intervening time span<ref name="death"/> (since fixed).