I get relay access denied sometimes
We are using postfix on a RedHat server+ Courier-IMAP + "pop before
Sometimes have we problems with that the mail-users gets "relay access
denied" when they try to send emails, this problem is going away after
a while and it is possible to send emails again (without we
do anything with the mail server). This problem seams to come
and go and it feels like it coming more and more often.
OK, I am quite new to administrate this type of mail server, but
what I can see in the mail logs is when "pop before SMTP" have timed
out a user and later when they tries again to send a mail then they
not get logged in by "pop before SMTP". But the user is all the time
connected to the mail server to check for incoming mails.
Would be happy for help!