Re: Port 25 redirection w/ Barracuda

Chieftonw wrote:

So my question is; Is it possible to setup a second SMTP service on another
port that the external clients can authenticate to and send their outgoing
mail through. I tried creating another virtual SMTP server with another
port, but any mail sent via it is never received. I can only assume that the
SMTP server is trying to send the mail out via the modified SMTP port. (just
a guess) Obviously the mail server needs to send out via port 25, regardless
of the port the client authenticated to.

Any ideas how this can be done?

You should set up a Virtual SMTP server that requires authentication (ie untick Anonymous), allows relaying for authenticated users and listens on port 587 (that is the IANA defined port for authenticated SMTP email submission).

Then add it as a local bridgehead in the existing SMTP Connector, so that it will use that for outbound deliveries.

Add rules to your firewall to allow inbound access to port 587 and forward/publish/whatever that to the SBS.

In the client software, change the outbound SMTP port to 587, and set them to authenticate.

--
Steve Foster [SBS MVP]
---------------------------------------
MVPs do not work for Microsoft. Please reply only to the newsgroups.
.

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