Mail Server Log
Jun 09 16:38:27 auth: Error: od(user,ip<J2dpdWH7GQB501oQ>): validate response: unable to lookup user record
user and ip I took out
smtp log
Jun 9 16:41:10 mail.psgholdings.com.au postfix/smtpd[52062]: connect from unknown[ip]
Jun 9 16:41:10 mail.psgholdings.com.au postfix/smtpd[52062]: lost connection after UNKNOWN from unknown[ip]
Jun 9 16:41:10 mail.psgholdings.com.au postfix/smtpd[52062]: disconnect from unknown[ip]
So the incoming is no problem, just the outgoing. Looks like it can't find the user to authenticate.
I have done this as per the tech note.
For OS X Server (Mountain Lion)
- In /Library/Server/Mail/Config/postfix/main.cf, locate the smtpd_helo_restrictions setting.
- Remove "reject_non_fqdn_helo_hostname" from the list of settings.
- Restart the Mail service.