SBS2011 - Exchange 2010 receiving email.

Posted on 2015-01-21
Medium Priority
Last Modified: 2015-01-21

Our client has SBS2011 (Exchange 2010) and we want to provide a second incoming mail should the first one not be available.

They have a Checkpoint firewall with two Broadband connections and when one goes down (as it does quite often) they would like email to continue being delivered to exchange via the second broadband connection (IP).

Is this possible please from SBS2011/Exchange 2010.

Understand there will be some messing around with MX records but not sure if Exchange 2010 can handle this. If it can not sure how to configure it.

Thank you
Question by:AndyKeen
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LVL 22

Accepted Solution

David Atkin earned 2000 total points
ID: 40562408
Presuming that the Checkpoint is load balancing?  If so, Exchange won't care where the mail is coming from.

Add an additional MX record pointing to your second external IP and give it a higher priority.

How do you send your outbound mail?  If you're using an ISP as your smart host then this may cause an issue if they are different ISPs.

Author Comment

ID: 40562455
Hi David.

thanks for the quick reply.

outbound is via DNS so no issue there. in fact I have configured outbound DNS in exchange to use a 'neutral' DNs server (googles) - not the ISPs as outbound mail can get hung.

so simply setup a second MX and point to the second BB ip with a higher priority.

Thanks again David
LVL 22

Expert Comment

by:David Atkin
ID: 40562492
Hi Andy,

Yes thats correct.  You will need to create an A-Record for mail2. (this will be pointing your external IP). Then use mail2.domain.com as your second MX record.

Hope that makes sense.

Author Comment

ID: 40562547
it does indeed David - done that numerous time, just not often for a failover second IP.

Thanks again David

Author Closing Comment

ID: 40562550
Quick reply, stayed engaged and accurate with answer.

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