Sendmail, kinda working, kinda borken
I've been running a RH server since 7.1 and generally everything works out great, one of my HDs fried recently so I decided to reinstall with Fedora, I've gotten the server back up and running on all fronts except mail, its not quite working. First off, my firewall is blocking my SMTP port so I can't currently _receive_ mail from outside my server but I'm aware of this problem and will be fixing it shortly. What is stumping me is that I can't send mail to certain domains _from_ my server, it either times out or is refused:
Feb 6 10:27:46 domain sendmail: j15KvUHl013820: to=<email@example.com>, ctladdr=<user@domain> (500/500
), delay=21:30:16, xdelay=00:03:00, mailer=esmtp, pri=2011505, relay=gsmtp57.google.com. [18.104.22.168], dsn=4.0
.0, stat=Deferred: Connection timed out with gsmtp57.google.com.
Feb 8 07:24:46 domain sendmail: j18EOvHl020075: to=<firstname.lastname@example.org>, ctladdr=<email@example.com> (500/500), delay=00:59:49, xdelay=00:00:00, mailer=esmtp, pri=121546, relay=mxpool.postoffice.net. [165.212.6
5.113], dsn=4.0.0, stat=Deferred: Connection refused by mxpool.postoffice.net.
But to users at other domains the mail gets sent fine. Why would it only fail on sending to some domains, is it a problem with my DNS?
Any help is much appreciated,