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Thanks again for your help. I found a reference to the Milter service not running may cause this so I did a reboot and found that that to be the case. After enabling it the issue was resolved. I will try *systemctl enable pc-remote.service to see if that resolves the issue.
Thank you, that did correct the issue with POP3 email not working after reboot but did not correct the SMTP authentication error. It still requires me to run the plesk repair mail command after reboot. Here is the error:
NOQUEUE: milter-reject: EHLO from mydomain.com[MY IP ADDRESS]: 451...
Thank you for the help.
The repair command does not return any issues even though the problems is resolbed after it runs. Here is the results when run with the -v parameter.
Here is what it looks like when everything is working after reboot:
Here is what it looks like after reboot and...
I recently moved my websites from Centos to Ubuntu. Every thing worked fine until I had to reboot the server when I noticed that I could no longer authenticate using SMTP and POP3 mail was not working. After further investigation I found that Dovecot IMAP and POP3 server service had not started...