I have Exhange Server 5.5 Sp4. SMTP relay has been
When I check my outgoing queue, I find lots
of unknown message pending and waiting to send. After a
while, I get lots of notification email in my
administrator email account, "Outbound Mail Failure".
One of the recipients is getting "returned mail:user
unknown" messages from "Mail Delivery Subsytem". I have
changed their password frequently in the last 7 days, but
they continue get these messsages.
Can anybody help me?
P.S. - The Routing Restrictions have been set as follows:
Reroute incoming SMTP Mail:
- The name of the domain to be routed is specified in the
routing listbox, and is specified as "Should be accepted
Hosts and clients that sucessfully authenticate - Checked
Hosts and Client with these IP Addresses - Checked
- but no IP addresses actually entered in the list box
because I some users have dynamic IP addresses.
Specify the hosts and clients that can NEVER route mail
- I have entered a couple of IP addresses from very active
22.214.171.124 - 255.255.255.0
126.96.36.199 - 255.255.255.0