[Assp-user] Fwd: Problem with ASSP and Mail hub integration

[Farid B. <be...@gm...>]

---------- Forwarded message ----------
From: Farid Behnia <be...@gm...>
Date: Sep 13, 2006 1:36 PM
Subject: Re: [Assp-user] Problem with ASSP and Mail hub integration
To: Questions and Answers for users of ASSP Anti-Spam SMTP Proxy <
ass...@li... >

Hi,

On 9/13/06, pa...@bl... <pa...@bl... > wrote:

> On 13 Sep 2006 at 9:34, Farid Behnia wrote:
>
> >  Hi all,
> >
> > We've been working on a specific setup for sendmail and ASSP. Our ideal
> > setup is to run a sendmail mail hub that represents 3 sendmail servers
> in
> > our LAN and run ASSP as the Antispam in a different machine that stands
> > between the mail hub and the internet.
>
> I don't understamd what the mail hub really is - a full MTA or a proxy of
> some sort ?
> Does it load balance or route depending on domain etc ?


It's more like a proxy that can stand with one Valid IP representing your
internal mail servers(local IPs).
It can also be used to change the sender address of the mail sent by the
internal mail servers. Another advantage is the simplified security
management that can be performed on the mail server.


> >
> > ASSP(25) <-> Mail hub(mhub)(25) <-> mail.server1
> > mail.server2
> > mail.server3
> > ASSP filters incoming mail.
> >
> > So far we've been able to setup ASSP for one of the mail servers and
> it's
> > somehow working fine and the mail hub that can work with the three mail
> > servers. But when we tried to integrate ASSP and the mail hub, we
> > encountered errors like " user unknown" on the mail hub! Any ideas so
> far?
>
> Was this a working system before you tried ASSP?  It looks like the
> mailhub needs access to all
> local addresses.  LDAP?


Yeah, it was working flawlessly until we tried to put it this way: ASSP <->
mhub ...


> So we decided to change the setup to the following:
> >
> > Mail hub(mhub)(25) -> ASSP(25) -> mail.server1
> > mail.server2
> > mail.server3
> >
> > mail.server1(outgoing) -> Mail hub
> > mail.server2
> > mail.server3
> >
> > Therefore we changed the SMTPDestination field of ASSP from X.X.X.X:25
> (The
> > mail server that worked fine with ASSP) to
> > "X.X.X.X:25"," Y.Y.Y.Y:25" (adding the new mail server)
>
> This doesn't look right - I don't think you can put mutiple addresses in
> SMTPDestination.


There's a short tip under SMTPDestination in ASSP that says:

The address:port of your message handling system's smtp server.
If only the port is entered, or the keyword __INBOUND__:port is used, then
the connection will be established to the same IP where the connection was
received. This is usefull when you have several IPs with different
domains/profiles in your MTA.
Examples: "127.0.0.1:125", "10.0.1.3", "10.0.1.3:1025", "__INBOUND__:125",
"125", etc.




>
> > But maillog reports:
> >
> > Couldn't create server socket to " X.X.X.X:25","Y.Y.Y.Y:25" --
> > aborting connection
>
>
>
>
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