Thanks to everyone for your replies concerning our Domino email server and relaying third-pary mail (spam mail). After several tries and using various suggestions, I think the problem has been corrected. The only way we were able to stop the relaying was to put our email server's IP address along with the IP address subnet of all users that use this server in the "Allow messages only from the following external internet hosts to be sent to external internet domains: " As of now, it appears to be allowing all of our traffic through, but denying any relayed messages.
We tried using domain names in the "allow traffic" fields - didn't work. We tried using an " * " in the "deny traffic" fields - didn't work. Finally a suggestion from Chuck Morehead on the Midrange-L list came through suggesting to use specific IP addresses. That did the trick!!
Thanks again to all who replied and offered suggestions!!
Shane D. Rowe
Haulers Insurance Company, Inc.
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