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sendmail_logger – Sendmail-Compatible Logging

Last updated March 2020

Momentum supports logging in the same style as the Open Source MTA Sendmail ( This is mainly of use to sites which are moving from a Sendmail install or otherwise have log-processing software that reads data in Sendmail-compliant format.


The sendmail_logger module writes to two logfiles: a mainlog where receptions, deliveries, and delivery failures are logged, and a paniclog where errors are logged. These are configured as in the following stanza:

sendmail_logger "sendmail_logger1" {
  mainlog  = "/var/log/sendmail/mainlog"
  paniclog = "/var/log/sendmail/paniclog"
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