Re: SMTP traffic from DMZ declined
- From: "Steve Antonio [MSFT]" <steveant@xxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 25 Jun 2007 16:09:19 -0400
Have you opened port 25 on the firewall? SMTP flows over port 25.
Hope this helps.
Steve Antonio, CISSP
Microsoft Exchange Support
On Sat, 23 Jun 2007 17:47:00 -0700, Markus
<Markus@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Hi,.
I am unable to send SMTP traffic from a DMZ server to an internal Mail
Server. The situation is: I have a Web Server that sits on a DMZ, that
server needs to send SMTP traffic to an internal Exchange 2000 SP3 Mail
Server. All internal clients can receive a ?220 SMTP.myserver.com ESMTP 4 is
glad to see you? message. However, the DMZ Web Server does not receive that
reply (it gets a black empty screen). I can ping the Mail Server from the
Web Server and vice versa, also I have allowed all ip traffic from the Web
Server to the Mail Server for testing purposes, still no SMTP reply.
Additionally the Mail Server can send/receive traffic to/from the internet if
the request originates from the Mail Server. Internet originating
communication is not possible.
Can someone please direct me on how to get SMTP traffic request from the DMZ
Web Server accepted by the Internal Mail Server?
Thanks,
Markus West
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