RE: Exchange 2000 and firewalls, I need some Help!!

  • From: "Mark Fugatt" <mark@xxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 2 Jul 2003 18:03:22 -0400

The only port that you would need to have open for your Exchange server to
send and receive mail via the Internet would be port 25 (SMTP), you would
also need to make sure you have the ports needed to perform DNS name
resolution for outgoing mail.

Here is an article about hosting your own SMTP mail:

Mark Fugatt 
MCT, MCSE, Microsoft Exchange MVP 
Pentech Office Solutions Inc 
Tel:  585 586 3890
Cell: 585 576 4750
Fax:  585 249 0316 

-----Original Message-----
From: Erhard Haniffa [mailto:erhardhaniffa@xxxxxxxxxxxxxxxxx] 
Sent: Wednesday, July 02, 2003 5:46 PM
To: [ExchangeList]

Hi everyone,

I've read the following article on MS Knowledge base : 280132 that
describes how to make connections to an MS Exchange 2000 server sitting on
a DMZ.

What I'm actually looking for is what ports do I need to open up on my
firewall so my exchange 2k server can send and receive mail through the

Thank you in advance


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