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Transparent SMTP proxy - doing something wrong

Bob M
I want to use Transparent SMTP proxying, as to change my MX would have me down to one MX record, instead of the 3 I have right now (2 from my ISP and they relay to me).

Well, I think I want Transparent.  My understanding of Transparent is no changes to DNS.  ASL watchs for a port 25 flow, captures it, checks it, tags it, sends it on.

So I enable Transparent SMTP proxy.

Nothing in Domain Groups
Nothing in Profiles and domain group assignments
Feature setting all default (nothing set)
Content filters all disabled
Spam Protection enabled
Threshold 1:  08 WARN
Threshold 2:  :[:P]lease select:: Reject  (I would ASSUME that T2 is NOT enabled)
SS whitelist empty
SMTP Auth disabled
Advanced Settings
    Only Dos protection enabled; all else defaulted.

So NO mail seems to come through to my internal server.

I disable Transparet SMTP proxy and everything starts working again.

OK what have I missed????


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  • 0
    Define the Domain Groups....

    CTO, Convergent Information Security Solutions, LLC

    https://www.convergesecurity.com

    Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries.  Use the advice given at your own risk.

  • 0 in reply to BrucekConvergent
    So let me see if I got it so far....

    I create Domain entries.  Since I host to domains, I create two of these, and include their sub domains

    The I bet I have to set up profiles.

    I can do it for both domains in one policy, it seems.

    Oh wait, there is one host, that I do NOT want to deal with.

    Do I set up a domain specifically for it and then tell ASL to skip it?
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  • 0 in reply to BrucekConvergent
    So let me see if I got it so far....

    I create Domain entries.  Since I host to domains, I create two of these, and include their sub domains

    The I bet I have to set up profiles.

    I can do it for both domains in one policy, it seems.

    Oh wait, there is one host, that I do NOT want to deal with.

    Do I set up a domain specifically for it and then tell ASL to skip it?
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