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Sendmail is not working on my LEMP 16.04

Posted February 25, 2018 1.6k views
NginxPHPEmailUbuntu 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 [127.0.0.1]” every time I test it. I have tried disabling the firewall and still did not work.

Tutorials that I tried but did not work:
https://www.digitalocean.com/community/tutorials/understanding-and-implementing-fastcgi-proxying-in-nginx
https://www.digitalocean.com/community/questions/configure-ubuntu-16-04-with-lemp-to-send-emails-for-multiple-websites
https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-14-04

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

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KDSys November 15, 2019

Hi @scottscp911,

Sendmail passes messages submitted by “send via command line sendmail” to local sendmail daemon listening at 127.0.0.1:25. It seems like you haven’t configured it that way. Please try and use the following

To fix, set DAEMON_OPTIONS in your sendmail.mc file. Add listening on 127.0.0.1 or use listening on IPv4 “any”.

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

DAEMON_OPTIONS(`Port=smtp, Addr=127.0.0.1, Name=MTA-loopback')dnl

Regards,
KDSys

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