smtp do not work

[Gipi81]

smtp does not work

I have this problem in my server (SuSe 9.1 and Plesk 7.5.4):
the smtpd daemon does not work.
In /usr/local/psa/var/log/maillog i do not see any error message.
Can you help me?

Thanks

 

[etan]

You need to elaborate.

By not working, do you mean, not sending or recieving mail ?
Or do you mean its not starting at all.

 

[Gipi81]

The smtp daemon do not start (or it is not configured for working, because the smtp port is closed).
And, important, i do not receive any email at my domains hosted in my server.
It's a problem of plesk upgrade?
Can i resolve it?