Question : Event ID 3030, 3018, 3015 logged, lots of messages in Queues

Hi

I have a client that has SBS 2003 SP2

We are experiencing the problem where they are getting a lot of errors in the event logs,

Event Type:      Error
Event Source:      MSExchangeTransport
Event Category:      NDR
Event ID:      3030
Date:            18/07/2010
Time:            12:32:20
User:            N/A
Computer:      FT01
Description:
A non-delivery report with a status code of 4.0.0 was generated for recipient rfc822;keith.todd@ffastfill.com (Message-ID <FT017nyeKzGZuNY100000373@fibxxxx.net>).

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type:      Error
Event Source:      MSExchangeTransport
Event Category:      NDR
Event ID:      3018
Date:            18/07/2010
Time:            12:02:32
User:            N/A
Computer:      FT01
Description:
A non-delivery report with a status code of 5.4.0 was generated for recipient rfc822;[email protected] (Message-ID <FT01l3AY3kPFafA800000374@fibxxx.net>).  
Causes: This message indicates a DNS problem or an IP address configuration problem  
Solution: Check the DNS using nslookup or dnsq. Verify the IP address is in IPv4 literal format.
For more information, click http://www.microsoft.com/contentredirect.asp.
Data:
0000: ef 02 04 c0               ï..À    


I have checked the SMTP server and connector and we are not an open relay.

There are lots of emails to various domains in the Queue.

We also have recipient filtering that has been enabled for some time so i cant work out why we are getting this

Any help would be much appreciated.

Thanks

Nick

Answer : Event ID 3030, 3018, 3015 logged, lots of messages in Queues

If you have message filtering system, check how can it reject messages with non-existing domains.