>My problem/question concerns mail relay. I know that the only secure
>settings for Imail are No Relay, with clients using smtp authentication, or
>Relay for Specified Addresses, but since incoming mail is first received by
>the VirusWall I don't think smtp authorization will work correctly.
You are correct.
Since potential spammers will be connecting to VirusWall, and not IMail,
the relay settings need to be set up on both VirusWall and IMail (IMail
needs it just in case a spammer happens to find the port IMail is on; if
you have a firewall blocking it, you don't need to worry).
You'll need to look at the VirusWall manual to find out how to make sure
that it is not an open relay, or maybe someone here can tell you what to do.
>Also, my understanding is that when in-coming mail is sent from Trend to
>Imail, it
>all appears to come from the local machine, thereby eliminating Imail's
>ability to distinguish the true originating IP address.
That is correct. The E-mail is sent from Trend to IMail, so IMail records
the address that Trend is running on (the RFCs require it).
>Trend's VirusWall does not appear to provide such options; providing only
>the option to only
>accept incoming mail addressed to specified domains. This setting apparently
>causes my mail server to be seen as an open relay because it will accept
>mail sent to bogus@"my domain".
That won't cause you to be an open relay. You will only be listed as an
open relay if people can connect to your mailserver and send to
[EMAIL PROTECTED] (a domain you do not host). However, if
Trend is set up to only accept incoming mail, then your users won't be able
to connect to it to send outgoing mail (although they could connect to the
IMail server to do that).
-Scott
---
Declude: Anti-virus, Anti-spam and Anti-hijacking solutions for
IMail. http://www.declude.com
---
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