WHY I CAN’T RELAY EMAILS MY VIRTUALMIN SMTP SERVER?
I create a full SMTP Mail server following this course “Build Your Own SMTP Email Server and Send Unlimited Emails!”
And I got 10/10 as s ending score and everything is fine, when I open round cube to send emails, it works perfectly, but when I connect to my SMTP from outside the server, like from my website or from my email marketing application, I can’t connect to my server and send emails.
You just need to start if SMTP authentication by executing the following command through putty:
So open putty SSH client and connect to your Virtualmin server, then run copy and paste this command.
sudo /etc/init.d/saslauthd start
* If you are working on a centos machine, run the following commands instead
systemctl enable saslauthd systemctl start saslauthd
Then, reboot your server by running the following command:
I hope this helps.