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How do I host email locally, website remotely (3rd party) for the same root domain?

Posted on 2004-10-18
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Last Modified: 2010-03-18
Hi all,
I'm setting up a SBS 2003 network for a small company. We want to keep our 3rd party web host to avoid unnecessary security headaches  caused by hosting our brochureware company site locally. However, we'd like to use Exchange in-house to manage our communications. Since the web site and Exchange will use the same root domain, I'm not sure how to split this up. I have not looked into this in the past. Any suggestions?
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Question by:andynelsen
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brownmetals earned 125 total points
ID: 12341565
Hi there.

I just recently made a similar change to our network by adding SBS 2003. We also have a 3rd party that hosts our website, and wanted to keep the website hosted externally while hosting email internally.

There are two basic ways you can go with the Exchange server in house.

1. You can have the email collect at your 3rd party host, and use a POP 3 Connector in Exchange to download the mail in batches at intervals you define. The mail is downloaded to the server, and each client then connect to the in house server to receive email.

2. If you have access to the DNS records at your 3rd party host, you can alter the DNS records for the Mail Exchanger (MX) and have it point to the in-house Exchange server. This will require that you have a public IP address for the public interface on the Exchange server. If you setup your Exchange server's public IP as the primary MX record, you can then use the 3rd party host's mailserver as a backup by giving it a lower priority. This will give you a backup to your Exchange server in case it goes down.

You'll also have to consider what changes will need to be made to firewalls that exist on your network. You'll have to allow SMTP (Port 25) traffic through the firewalls if you want to set up the machine using Option 2.

Good luck!
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by:andynelsen
ID: 12342089
brownmetals,
Thanks for the advice. It sounds like you just did the exact thing I'm trying to do. I will check with the T-1 people about the MX record issue and revisit this topic before signing off!
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by:brownmetals
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No problem.

I'll keep an eye on this thread to see if there's any other helpful info I can provide.

Again, good luck! ;-)
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by:andynelsen
ID: 12360410
Thanks brownmetals. This turns out to have been exactly the info I was in need of!
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by:brownmetals
ID: 12360982
Glad this was helpful!

Thanks for the answer and grade.

Hope everything works out for you.

Jay
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