Exchange server connectivity - Can anybody help please... (Full Version)

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roshan_x -> Exchange server connectivity - Can anybody help please... (3.Jul.2008 1:43:22 PM)

Hi,

I have a problem with exchange 2007. We have two sites and two Exchange servers connected via VPN tunnel. We recently bought a MPLS link. the problem is when we move to Exchange servers to MPLS, mail are queued in the both servers and getting this error "451 4.4.0 Primary target IP address responded with: 421 4.4.2 connection dropped, "Attempted failover to alternate host, but that did not success. Either there no alternate hosts, or delivery failed to all alternate hosts. "
But I can ping/RDP in to each other without any issue.
Latency different in the links (VPN - avg 300ms and MPLS - avg 359ms)

Thanks
Roshan



John Weber -> RE: Exchange server connectivity - Can anybody help please... (3.Jul.2008 2:15:45 PM)

How did you have your receiveconnector configured on each HT before?

Can you telnet to the server on port 25?  What happens to that connection?

Could be that the change to the MPLS has changed the relationship between the default receiveconnector on each HT.



roshan_x -> RE: Exchange server connectivity - Can anybody help please... (3.Jul.2008 2:34:12 PM)

Hi,

We did not do any change to the HT connector. And we only added static route to the both the Exchange servers to talk through MPLS link.

Event I can telnet to port 25 vice versa without any problem.

Thanks



vsin11 -> RE: Exchange server connectivity - Can anybody help please... (7.Jul.2008 11:45:25 PM)

Check the event logs of the server. Is there any certificate error like "Inbound direct trust certificate with thumbprint 377ADDF79A8C9292A306E867A7C7C1EE3958C0DD has expired."

If yes you have to remove the existing certificate and run New-ExchangeCertificate to generate a new direct trust certificate.



roshan_x -> RE: Exchange server connectivity - Can anybody help please... (15.Jul.2008 4:07:09 PM)

I could not find any error related.


thanks



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