Last week our Exchange server went down during a power failure and the UPS batteries failed. When it came back we had a problem sending email, but that was corrected by installing a patch for the McAfee Groupshield for Exchange. Everything seems normal except for sending email to one domain. They say they are using a call back verification service and our server isn't responding. Is this a setting that got hosed? We previously sent them messages and they were received.
Our exchange, which is sending to everyone else ok, gave this error to the message originator
'xxxxx@xxxx.com' on 8/9/2005 8:14 AM
The recipient name is not recognized
The MTS-ID of the original message is: c=US;a= ;p=PANMAIL;l=EXCHANGE-050809121330Z-1611
MSEXCH:IMS
ANMAIL:EXCHANGE:EXCHANGE 3550 (000B09B6) 550 Return Path not verifiable.
Our exchange, which is sending to everyone else ok, gave this error to the message originator
'xxxxx@xxxx.com' on 8/9/2005 8:14 AM
The recipient name is not recognized
The MTS-ID of the original message is: c=US;a= ;p=PANMAIL;l=EXCHANGE-050809121330Z-1611
MSEXCH:IMS
ANMAIL:EXCHANGE:EXCHANGE 3550 (000B09B6) 550 Return Path not verifiable.