Re: good howto needed to setup exchange w/o open relay
From: Patrick Genova [MSFT] (pgenova_at_online.microsoft.com)
Date: 03/18/04
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Date: Thu, 18 Mar 2004 06:49:45 -0500
Hi Dave,
By default Exchange 2000 out of the box is closed as an Open Relay.In the
Relay settings "Only the list below" should be checked and the only thing
that should be in this list are any 3rd party Servers that generate mail and
send it outbound through this server. You do not need to put in your Subnet
for your uses to be able to send mail. At the bottom uncheck "Allow all
computers which successfully authenticate to relay, regardless of the list
above". If this is your only Exchange Server in the Org this is all you need
to do. If you have more than 1 Exchange Server and you have one as a
Bridgehead for outgoing mail you will need to add the IP address of the
servers in the "Only the List Below" box. Also make sure that the Guest
account is disabled.
Hope this helps,
-- Patrick Genova Pgenova@online.microsoft.com Please do not send mail directly to this alias. This alias is for Newsgroup purposes only. This posting is provided "AS IS" with no warranties, and confers no rights. "dave" <davemcp@remove-this-part.qwest.net> wrote in message news:f4ae01c40cbd$c0d58ef0$a501280a@phx.gbl... > I have installed exchange2000 numerous times on > windows2000 server and advanced server. I allways seem to > get the same problem. Echange accepts email for unknown > users (spam). It also appears to be acting as an open > relay. I start getting numerous undeliverable messages to > domains that have not been mailed from my domain with spam > and virus messages. When I check the SMTP queues there > are lots of domain queues that exchange is attempting to > relay to. I have insured that the relay settings only > allow forwarding from wihtin my local subnet(private) and > that the gateway out to the real world is not permitted to > relay. Only valid users have exchange mail boxes but I > still have this problem. I am to the point of setting up > a linux box just to run interference and shut down the > relay. Help > > Thanks
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