Mike, here is the link:
pastebin - collaborative debugging tool
Also, per your links below, I modified zimbra to include my remote networks to relay mail for. But that did not make any difference yet as I still can't send/receive emails.
Question: Can I try to send an email directly from the Zimbra server?
Here's my postconf network config:
zimbra@mx1:~$ postconf mynetworks
mynetworks = 127.0.0.0/8 192.168.1.100 192.168.2.0/24
Per above, my zimbra server host is 192.168.1.100 and I am sending email from remote network 192.168.2.10... So, is the postconf above correct.
Please, I would appreciate any further comments/suggestions to help me fix this problem!
Joe