>We also block the null senders to stop the spamming. But it also stops the >return receipt with Outlook. If anyone knows away around this please let me >know.
As mentioned in the E-mail, you may find you can't get E-mail to some servers if you are breaking the RFCs this way.
Also, you will find that you don't get return receipts or bounce messages. That's because the RFCs say that those types of messages MUST use the NULL sender, and that you MUST accept mail from a NULL sender. The *only* way to get around it is to uncheck the "Refuse NULL <> Senders" option, and become RFC-compliant.
-Scott
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