troubleshooting Question

Cannot send to btinternet addresses from Exchange 2010

Avatar of ClintonK
ClintonKFlag for United Kingdom of Great Britain and Northern Ireland asked on
42 Comments1 Solution1148 ViewsLast Modified:
I have a Windows SBS 2011 with Exchange 2010. It's a new server and doesn't replace any previous Windows servers.
All emails, both internal and external are delivered successfully with the exception of anyone with a btinternet address. I have tested failed addresses from other Exchange servers and they send OK so it's just this server that seems to have something against BT.
I get failure messages like this:
"This message hasn't been delivered yet. Delivery will continue to be attempted.
The server will keep trying to deliver this message for the next 1 days, 19 hours and 55 minutes. You'll be notified if the message can't be delivered by that time"
I've used MX Lookup to check for any blacklisting and all is clear.
Join our community to see this answer!
Unlock 1 Answer and 42 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 42 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros