I guess you use vpopmail.
If you use chkuser patch (on for qmail/vpopmail), or Shupp's toaster which includes chkuser, you can force a server to accept only authenticated sessions. So, you can set up a dedicated port (like the submission port) or a dedicated IP only for this purpose.


See http://www.interazioni.it/opensource/chkuser/ for more details.

Tonino

Wouter van der Schagt ha scritto:
My apologies, you already mentioned it.. by firewall restriction.

Another question.. spammers could still connect if they knew they were supposed to connect to port 587 am i correct? Or did you find a way around this as well?

Thanks
- Wouter

----- Original Message ----- From: "Alastair Battrick" <[EMAIL PROTECTED]>
To: <vchkpw@inter7.com>
Sent: Thursday, April 10, 2008 4:39 PM
Subject: Re: [vchkpw] SMTP Authenticaton


Wouter van der Schagt wrote:
An option for us to setup a different server that only handles smtp functionality for our client, however the problem then is that a
domain needs to exist on two servers. one for the popbox and one for
smtp authentication to work. Or is it possible for the vpopmail to
connect to the database on the other mailserver for authentication or
would that be too slow? Does anybody have any other suggestions
perhaps?

Hi Wouter

I ran into this same problem. I got around it by creating a SMTP
submission port that accepts SMTP Auth emails into the server on port 587. Port 25 only accepts messages from our spam appliance by firewall restriction.

Each mail client has to be set to use port 587 and SMTP Auth of course.
--
Alastair Battrick











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