We have serveral regional mailboxes on our exchange server and one domain is having problems sending email to a particular mailbox (Region5@domain.com). this mailbox can receive all other email from different domains with no problem.
The sender receives the following error message:
The following recipient(s) could not be reached:
(external for mydomain.com) on 9/26/2007 12:08 PM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<senderdomain.com #5.7.1 smtp;550 5.7.1 Unable to relay for Region5@mydomain.com>
The Exchange Server is completely up to date with patches and updates. I have checked both DNS Servers and records with no problems indicated. I have sent test message to the mailbox with no problems indicated. I believe the problem is on the sending domain but there tech insists it is on my end?
Can someone please help?
WINNT511
The sender receives the following error message:
The following recipient(s) could not be reached:
(external for mydomain.com) on 9/26/2007 12:08 PM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<senderdomain.com #5.7.1 smtp;550 5.7.1 Unable to relay for Region5@mydomain.com>
The Exchange Server is completely up to date with patches and updates. I have checked both DNS Servers and records with no problems indicated. I have sent test message to the mailbox with no problems indicated. I believe the problem is on the sending domain but there tech insists it is on my end?
Can someone please help?
WINNT511