Sendmail – Configure to listen on port 587

March 6th, 2010 by admin Leave a reply »

Getting sendmail to listen on port 587 is very simple.

Log into the server as an admin and find the following file “sendmail.mc”, it should be located at

"/etc/mail/sendmail.mc"

Once you find this file look for the 2 following lines:

DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
#DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl

On comment the second line so that it looks like

DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl

Once done restart sendmail and test. It should now listen on port 587.

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