I'm relatively new to SIMS, so please excuse any glaring oversights. I went through the archives pretty thoroughly before posting. I'm using SIMS 1.7. I feel like I've got to be missing something obvious.
Since we are cursed with an Exchange 2000 server, and since Exchange does not offer RBL support, we are trying to put in a SIMS box as a front-end server to check incoming mail against an RBL before allowing that mail to pass on through to the Exchange server. I've been able to get this working just fine, but I cannot figure out how to do it without leaving an open relay.
The SIMS box is behind a firewall, and receives our incoming SMTP connections through a pinhole. I've set the SIMS SMTP to send "via Foreign Mail Server," specifically our Exchange server, which is also behind the firewall. I have no entries in the SIMS router.
Incoming mail consistenly passes through to the Exchange server as long as the "Relay For Clients" box is unchecked. However, if I check that box, no mail ever goes through. I've tried innumerable configuration experiments with the client hosts list and the router, all based on things I've read in the archives, but nothing's worked. Obviously, I need to check that box, lest we be blacklisted ourselves.
Is there no way to simply have SIMS check incoming messages against an RBL and then pass them blindly along to a destination mail server? Seems like I must be overlooking something very simple.
If anybody has any suggestions as to how to make this work properly, I'm very grateful.
TIA.
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:: Elliot Wheaton
:: Network Administrator
:: Medius IV
:: eArchitects
:: 81 Lafayette Street
:: San Francisco, CA 94103
:: (415) 487-8900 ext 246
:: (415) 437-5149 fax
:: Mailto:[EMAIL PROTECTED]
:: http://www.Medius-IV.com
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