Outlook 2003 sent e-mails bouncing back

[fastek]

This problem started occuring about a week ago and involves e-mails sent to
known good destinations. Here's the error message:"450 [TEMPFAIL] destination
not valid within DNS"

Anyone seen this before?

 

[Jocelyn Fiorello [MVP - Outlook]]

Have you checked with your ISP? From what I've read, errors that are
numbered 4xx are usually temporary and ISP-related.

--
Jocelyn Fiorello
MVP - Outlook

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