Hi all,

This is the idea of a new kind of POP3/smtp proxy server that would prevent domain

The POP3/SMTP proxy should:
- learn which accounts are local, create their Maildirs automatically,
deliver the local messages locally, and send any mail for the accounts
not local to the MX0 mail server for that domain.

- fetch the messages periodically from the central server, without waiting
the local users to request them. The local users would always retrieve the
messages already downloaded by the proxy server.

- optionally, the proxy server could forward all external messages
(destined for other domains) to the central server, giving it the chance to
apply message policies, such as eMPF. Or the proxy server could fetch the
policies from the central server and apply them by itself.

Do you think this could work?


----- Original Message ----- From: "Tom Collins" <[EMAIL PROTECTED]>
To: <vchkpw@inter7.com>
Sent: Tuesday, October 25, 2005 12:19 PM
Subject: Re: [vchkpw] OFF-TOPIC: A good POP3/SMTP Proxy Server

On Oct 25, 2005, at 5:55 AM, Bruno Negrao wrote:
Instead, I want a POP3 proxy server integrated with SMTP, that could
prevent the messages internal to Allentown to cross the internet link.
I'd like the proxy server to keep the local messages right there in

Does someone know a product like that?

There have been past conversations on the list about doing that with
vpopmail on both ends.  Here's the general gist:

Location A has their POP mailboxes, and aliases to forward mail for users
at location B to [EMAIL PROTECTED]
Location B has their POP mailboxes, and aliases to forward mail for users
at location A to [EMAIL PROTECTED]

Both servers have domain.com in their rcpthosts, virtualdomains and
users/assign files.  Location A has loca.domain.com as an alias domain,
and Location B has locb.domain.com as an alias domain (to domain.com).

Users configure their email client to pick up mail as
[EMAIL PROTECTED], but use [EMAIL PROTECTED] as their email address in
the From header.

In your case, you'd keep New York as your MX 0, and it would forward mail
to Allentown as needed.  People at the Allentown office who sent mail to
each other, would have their mail stay on their local (locb) server.
Mail to New York and any other Internet location will be quickly queued
on the locb server.  You might even be able to configure traffic priority
on your dialup link to throttle smtp traffic over the dialup link to give
preference to http (and other) traffic.

Tom Collins  -  [EMAIL PROTECTED]
QmailAdmin: http://qmailadmin.sf.net/  Vpopmail: http://vpopmail.sf.net/
You don't need a laptop to troubleshoot high-speed Internet: sniffter.com

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