Exchange Publishing steps

Microsoft Exchange 2000
I have an exchange 2000, I want to host my external email on this server instead of leaving it at my ISP side, what steps should I take to do so with good security. thanks

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I’m assuimng here that your server is correctly configured to send and recieve mail. I would need a little more information to provide you with steps to set your mail server up.

As far as publishing the server goes, you need to clarify a few points for yourself.

If you intend to publish it with full access then you really only have one choice, Microsoft’s ISA Server. I’ve used ISA Server 2000 to do this, but haven’t had a chance to work with 2004 yet. ISA Server is the only firewall that I am aware of that can inspect the RPC packets to protect your exchange server.

If you only intend to publish Outlook Web Access (OWA) then you need a firewall as well. This doesn’t have to be ISA Server, but sice you are running in a windows environment (at least as far as this is concerned) i’d stick with that for simplicity.

There are a few good guides available, and i’ve included the links below. Let me know how you get on.



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  • Mraslan
    If you have your exchange server behind an ISA server, then you should follow the steps described in the previous post, however i think that you want to know how to make mails sent to arrives to your mail server. The steps are simple, you should first have a real IP connected to your exchange (or Firewall/NAT in general), and it should be fixed, meaning that it doesn't change when you restart your server, then the next step is that you must have access to the DNS system that is responsible for your domain name "" in my example, you should create in it an A record that maps for example "" to the real IP you have on your server, then you creae an MX record that maps the domain "" to the the A record you created earlier, that is "". When any mail server (i.e. Hotmail) on the internet tries to send a mail to say, that mail server will query the DNS hirarcy for the MX record to know who is the server responsible for your domain, which will return, then it will try to get its IP address, this is where the A record comes in, after that it will contact your mail server (or Firewall/NAT pretending to be a mail server) and sends the mail to it. Up from here, its a configuration settings in Exchange or ISA or whatever.
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