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Python interface to sendmail's libmilter

PythonMilter provides a Python interface to Sendmail's libmilter. Milters can run on the same machine as sendmail, a different one, or even run with a different operating system or processor than sendmail. Sendmail talks to the milter via a local or internet socket, and keeps the milter informed of events as it processes a mail connection. At any point, the milter can cut the conversation short by telling sendmail to ACCEPT, REJECT, or DISCARD the message. After receiving a complete message from sendmail, the milter can again REJECT or DISCARD it, but it can also ACCEPT it with changes to the headers or body.

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Verified by

Verified on




Verified by

Janet Casey

Verified on

24 November 2004

Leaders and contributors

Stuart D. Gathman Maintainer
Jim Niemira Contributor

Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,

Software prerequisites

Required to usePython 2.2.2 or later
Weak prerequisitePython SRS library
Weak prerequisitePythonDNS
Weak prerequisitepydspam

This entry (in part or in whole) was last reviewed on 23 January 2017.


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