exchange error in event viewer Exchange 5.0

[johndan]

We are getting a bunch of errors on our server and eventually brings service down......The outbound message queue is also filling up with unknown messages

error 4132

The Internet Mail Service has failed attempting
to deliver a report or system message and is deleting it.
The spool file name can be found in the Data section of
this event and this file can be found in the ARCHIVE directory.


error 4115
The message from the spool file CTTDL094 seems to be looping
through the routing extension for the Internet Mail Service.
Please check that the routing DLL is configured properly.

error 2078
Unable to submit, send or transfer out a message.
Check PR_DELIVER_TIME, PR_NDR_REASON,
PR_NON_DELIVERY_DIAGNOSTIC.

error 4115
The message from the spool file CTTDL0J0 seems to
be looping through the routing extension for the
Internet Mail Service. Please check that the routing DLL
is configured properly.

error 4029

The following message could not be delivered. The destination
server reported: 553 sorry, your mailserver (64.0.220.182)
is rejected by relays.ordb.org. See

http://ordb.org

and contact
your ISP. From: <oljat@extra.hu> Subject:

 

[johndan]

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