We have a RH6.1 based mail pop3&smtp server. The clients are NT4.0 running MSOutlook 97. In Outlook there's an option to receive notification once a mail has been received/read. This works fine on a local LAN level, but any mail sent to the outside never returns a received receipt. We have a firewall set up which I'm guessing may be part of the problem. Any thoughts?
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