Ok, after a reinstall it sends it to foo.com with no errors, but it never reaches its destination. It's also on a lan named foo.com. maybe that's the problem? Although there is nothing like that in my hosts file so I'm assuming I've done something wrong somewhere. My paste below shows /opt/zimbra/log/zimbra.log is empty. and my /etc/hosts file is ok. I can send to all other domains; my gmail account, my hotmail account, etc. but not foo.com. Any other ideas? because the users have to be able to email one another on foo.com. Would the relay host have anything to do with it? I'm using one.
[root@zimbra log]# ls
amavisd.pid clamd.log freshclam.log myslow.log tomcat.pid zmmtaconfig.log zmmyinit.log
audit.log clamd.pid freshclam.pid mysqld.log zimbra.log zmmtaconfig.pid
[root@zimbra log]# cat zimbra.log
[root@zimbra log]# cat zimbra.log | more
[root@zimbra log]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost  |