My server having problem sending out mails. Nothing wrong receiving
and problems with sending. It gives this error:
421 Host aol.com not found for mailer ddn.
550 Postmaster... User unknown
I'm using a 5.x sendmail version. and also from the messages log file I
keep receiving lame server errors. What could have gone wrong ..is there
any patches that I can install for the mean time.
Also I need some guide in installing the sendmail, gcc and dns. I
rreally appreciate if you could help .