MX pointer for Small Business Server 2011

Posted on 2011-10-27
Last Modified: 2012-05-12
I have a small Business server 2011.  My domain is through google apps and go daddy.

Go daddy has the following:

DNS Manager: Available
A @ go.og.le.21
A @ go.og.le.21
A @ go.og.le.21
CNAME calendar
CNAME docs
CNAME mail
MX @
MX @
MX @

I want to set things so if my server is not up then email will reside on google apps then get delivered as soon as My server is back up.

Which of the above settings do I change to point at my own domain and whcih ports do I forward to my server??

Question by:HDM
    LVL 21

    Expert Comment

    You will need to modify the priority settings for your MX records.

    The lower priority MX should be the first destination that all sending servers will hit, so make that your server.  Change the priority of the GA MX's to be higher, I recommend going by 10's, so make your server priority 10 and the next one 20, then 30, etc.

    You need to open/forward port TCP/25.
    LVL 21

    Expert Comment

    I'm not sure how GA works as a backup MX, you will probably have to configure it somehow to play that role so that it stores and forwards instead of just delivering to the GA inbox.
    LVL 56

    Accepted Solution

    You cannot do what you want. Google Apps (specifically gmail for business) was not designed to be a backup mail server and therefore has not functionality to store and forward as you desire. Similarly, because gmail for business is an end-storage system, there is no "good" way to sync Exchange with Gmail (a pop3 connector would be an example of a bad way).

    In short, you can use Exchange with a legitimate backup mail provider (often called backup MX services, such as those offered by DynDNS or mxtoolbox) or you can use google apps and not use Exchange (in which case SBS Standard is not a good fit), but you really can't effectively have both.

    LVL 21

    Assisted Solution

    Thanks for the verification Cliff, I expected as much.

    Expanding on that, if you do go with a 3rd party backup MX, all of the info I provided about what needs to be done at GoDaddy still applies.

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