Sorry I wasn't able to establish an SMTP connection (#4.4.1)

[Javier12]

Hi everyone!

I've a dedicated IP installed on my Plesk Server. I have several domains installed, sharing server IP.

I've a lot of problems sending emails from differents domains, some mails are blocked into Mail Queue. When I analized log, I saw this message:

deferral: sorry I wasnt able to establish an SMTP connection (#4.4.1)

I have tested smtp, mail, etc... and everything seems to be ok.

Any solution?

Thank you very much!

 

[UFHH01]

Hi Javier12,

Parallels provides various KB - articles in the Parallels knowledge - base at: http://kb.odin.com/

If you use the search, you may find the KB - articles:

I have an issue with mail sending and see errors in the maillog ( KB - article 1398 )

or/and

I am getting "connection timeout" or "connection refused" error when trying to send mail to Plesk mail server ( KB - article 1388 )
​

If you experience issues/problems and investigate the log - errors, you often will find a detailled error - specification, as in your case "#4.4.1". You might consider searching for your error code as well at "http://www.ietf.org/rfc/rfc1893.txt", which lists all "Enhanced Mail System Status Codes" and therefore might help you as well to investigate your issue/problem.