Sendmail is not working on my LEMP 16.04

I’m setting up “sendmail” to send emails from my wordpress sites. I want to be able to use PHP mailer. I have tried every tutorial on the net to find and fix the problem. I keep getting “Connection refused by []” every time I test it. I have tried disabling the firewall and still did not work.

Tutorials that I tried but did not work:

Rest of the tutorials or questions do not have answers at all.


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Hi @scottscp911,

Sendmail passes messages submitted by “send via command line sendmail” to local sendmail daemon listening at It seems like you haven’t configured it that way. Please try and use the following

To fix, set DAEMON_OPTIONS in your file. Add listening on or use listening on IPv4 “any”.

In your add the second DAEMON_OPTIONS listed below. Recompile into and restart (or HUP) sendmail daemon.

DAEMON_OPTIONS(`Port=smtp, Addr=, Name=MTA-loopback')dnl

Regards, KDSys