2008-06-18 11:55:01 - mail --> mail.accepted.co.za (192.168.5.28]:2) status deferred
(conversation with mail.accepted.co.za[192.168.5.28] timed out while receiving the initial server greeting)
The is an example of the error log I recieved, when I did a msgtrace -s user@domain.
Every other domain accepts mails from the Zimbra server.(e.g yahoo, hotmail, gmail e.t.c)
I then decided to use our existing Exchange server as an SMTP relay, and our mails get delivered.
The recipient domain uses Exchange server.
What is the problem?