Hi,

We are unable to send mail to one of our remote site hosted on a child domain.

Can send mail from telnet but unable to do so using outlook or OWA.

I receive NDR 4.4.7 in outlook. DNS reverse lookup is fine.

The exchange 2003 server is also an additional DC in this site.

Regards

Syed

What is the exact error that you receive in NDR? Did you try to look in queue viewer?

Thank you for responding.

In outlook 2010 I get the following NDR:

Your message did not reach some or all of the intended receipients. Could not deliver the message in the time limit specifed. Pl retry or contact administrator. <domain name #4.4.7>

In queue viewer the message is still in retry state, i tried to force connection but did'nt help. In more information her it says" Destination server does not exist"

This exchnage server is also a secondary DC and DNS server.

Regards

Syed

This is most likely a DNS issue. On the connector properties, can you try to manually assign DNS server addresses?