tmcdonald61
IS-IT--Management
Hello. I have a problem with email to a partner that we have been receiving stuff to for years but suddenly all their email is bounced back as non-deliverable. I have been talking with them and they say nothing has changed on their end. The only chang on our end is removing a frontend server and using Postini. It's only email from them to us that gets rejected (tested with other outside email and it works fine) and we are able to send to them. Has anyone run into a similar situation before?
We have microsoft exchange 2003 (latest SP and patches).
Errors they receive are as follows:
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.
<ubgexchange.unitybuilders.com #5.4.0>
Could not deliver the message in the time limit specified. Please retry or contact your administrator.
<ubgexchange.unitybuilders.com #4.4.7>
The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator.
<ubgexchange.unitybuilders.com #4.0.0 smtp;417 DNS lookup failure: unitybuilders.com. Try again later.
Any ideas?
tmcdonald61
We have microsoft exchange 2003 (latest SP and patches).
Errors they receive are as follows:
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.
<ubgexchange.unitybuilders.com #5.4.0>
Could not deliver the message in the time limit specified. Please retry or contact your administrator.
<ubgexchange.unitybuilders.com #4.4.7>
The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator.
<ubgexchange.unitybuilders.com #4.0.0 smtp;417 DNS lookup failure: unitybuilders.com. Try again later.
Any ideas?
tmcdonald61