Strange no permission error

[brunei]

We have two Exchange 2k SP1 machines using Windows 2K Advanced Server, each a different name. Recently we have been receiving the following error when we try to send to one particular company:

Your message did not reach some or all of the intended recipients.

Subject: Email problems
Sent: 4/17/2002 1:45 PM

The following recipient(s) could not be reached:

'user@company.com' on 4/17/2002 1:45 PM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<xxx.xxx.com #5.7.1>

The weird part is that this is only happening through one domain, the other has no problem sending to this particular company.

Any ideas?

 

[MLandin]

Did you ever get an answer for this? It's happening to us to. This is NOT a case of SMTP relay problems...

 

[brunei]

We never did find out exactly what was causing this error. We just routed all outgoing mail through the server that had no problems and left it at that.