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OpenDNS Exchange 2007 on SBS08 box

Posted on 2011-03-24
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I have been using the OpenDNS basic package and implementation was initiated to stop the use of gmail and gmail chat and other web based mail and chat services.  The service works great with one issue.  If mail is sent to any of the .hotmail or .gmail address that may be legit for business purposes it is blocked or not resolved as exchange reports back.  I would like to have my exchange server point to my ISP's DNS for the mail function and leave the OpenDNS as the DNS of choice on my network.  Is this possible?  I cant seem to find anything specific to this.

Thanks in advance
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Question by:AlienAgenda
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by:TheTull
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There a couple of possible options that I can think of right off the bat:

1) Have Exchange just use some other DNS service for MX lookups (if possible, this may be tricky if Exchange is running on the DNS server for your users)

2) Have Exchange route mail through a specific SMTP host rather than send mail to the domain directly, then it shouldn't even bother doing DNS lookups
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AlienAgenda earned 0 total points
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For my exchange 2007 server that resides on my sbs08 server.
Open EMC - select server configuration - select hub transport - right click select properties on your mailbox server - select external DNS lookup tab - select Use these DNS Server vs the default to use the network cars assigned DNS.  I entered my local ISP's DNS servers.

All is well.  Web access to mail accounts is blocked but exchange originated mail to hotmail etc go through fine.
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by:AlienAgenda
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It is my solution
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