I have been working on moving from exchange 2000 (running win 2000) to exchange 2003 (win2003 ent), every thing was going ok. I recently added a new DC to the domain to plan for DR. My primary Dc and one of my AD controllers had several reboots and alot of downtime the earlier part of this week. As a result the following errors are now popping up with exchagne.
This also happens to be a time when i am moving over more mailboxes to the new exch 2003 server. Before this, I had no problems, as i have been the user on the 2003 exchange system since the second day. All permissions seem to be ok, with nothing i can see on exchange that prevents the sending.
Since they errors mention DNS, i have used nslookup with set option MX to ping the rejected mail servers. They all come back ok with no errors.
firstname.lastname@example.org on 4/5/2006 11:26 AM
The destination server for this recipient could not be found in Domain Name Service (DNS). Please verify the email address and retry. If that fails, contact your administrator.
email@example.com on 4/6/2006 2:06 PM
The message cannot be delivered due to a configuration error on the server. Please contact your Administrator.
<mailserver.domain.net #5.3.0 smtp;553 5.3.0 <firstname.lastname@example.org>... Addressee unknown, relay=[my external IP]>
The second Problem seems to be intermitent
Any help will meet with warm thanks.