OK - I think I have fixed the problem.
Maybe this is a well known thing and in a FAQ somewhere but anyway:
In Exchange manager, Connectors, your domain SMTP, properties - on the advanced tab tick the send HELO box.
Now mail gets through to all my probem domains.
So either this is a problem...
Frazer,
I am having the same problem - as with you certain email adresses with dots in the name fail but not only those ones fail.
I assume like me you are using the E2K SMTP server to deliver the messages directly and you are not going through your ISPs SMTP server.
I have looked at the...
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