551 5.7.1 Unable to Resolve IP Address

Alan · Joined: 05 Aug 2007 Posts: 2

I have an Exchange 2003 server and just starting today I am not able to send
e-mail to a specific address. When I try i get the following message: 551
5.7.1 Unable to Resolve IP Address.

I can send to the address from my home e-mail account.
This was working without issue in the past.

Any ideas?

Archived from group: microsoft>public>exchange2000>win2000

Leif Pedersen [MVP] · Joined: 05 Aug 2007 Posts: 193

See my reply in

microsoft.public.exchange2000.connectivity

Leif

"Alan" wrote in message @microsoft.com...
>I have an Exchange 2003 server and just starting today I am not able to
>send
> e-mail to a specific address. When I try i get the following message: 551
> 5.7.1 Unable to Resolve IP Address.
>
> I can send to the address from my home e-mail account.
> This was working without issue in the past.
>
> Any ideas?
>

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