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Internet Redundancy for Exchange Server

Posted on 2016-09-29
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Last Modified: 2016-10-05
Hi experts, I have 2 separate internet WAN links from 2 different ISPs. The WAN links are connected to 2 separate firewalls. 1 FW for each ISP. How do I configure internet redundancy for my servers should one internet fails on 1 link? I want incoming mail and outgoing mail to not be interrupted.
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Question by:totallypatrick
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4 Comments
 
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Expert Comment

by:Muhammad Mulla
ID: 41821431
You will need to set up 2 MX records in your external DNS. One pointing to your primary link IP with a low preference number (high priority) and the second to your secondary link IP with a high preference number (low priority). Outgoing mail will depend on your send connectors in your Exchange setup.
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by:totallypatrick
ID: 41821814
Yes i have already done that but how do i route to the same server if i have 2 different default gateway without changing manually?
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Muhammad Mulla earned 500 total points
ID: 41821882
If your internal router doesn't have the capability to failover the link you may need to do that manually in case of DR.
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by:totallypatrick
ID: 41829609
THanks for the help
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