I am used to the relay denied errors by now, but recently I got an error that has me stumped. It is only to one domain as I have never seen this before. I had thought it was a temperary thing, but it has been happening to this one address for the last 2 weeks. Any idea what causes this one, I looked through the microsoft help site but as usual, that was pretty worthless. I am assuming it has to do with DNS as most Exchange issues I have run into do. Also, I replaced the mail server name in the error line.
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There was a SMTP communication problem with the recipient's email
server. Please contact your system administrator.
<"Mail.Server" #5.5.0 smtp;550 [PERMFAIL] destination not
valid within DNS>
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*****
There was a SMTP communication problem with the recipient's email
server. Please contact your system administrator.
<"Mail.Server" #5.5.0 smtp;550 [PERMFAIL] destination not
valid within DNS>
*****
