share one record for autodiscover between exch 2007 and exch 2010

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A

atcnf2008



Hi, Everybody,

Our system: 1 AD, Exchange 2010 CAS array sp1(cas2010) and exchange 2007 sp2 (cas2007), to save cost, currently we only use SRV DNS record for exchange 2007 autodiscover and it's working: for IPAD/Iphone and Outlook anywhere. Now I plan to move some users to Ex2010 servers, can I just use the same SRV DNS record (which is cas2007.domain) for both Exchange 2010 users and exchange 2007 users? if I buy autodiscover.domain SSL certificate for cas2010, it will be good for 2007 users too? becuase the domain is the same, I see I must share one record for autodiscover, being SRV record or autodiscover.domain. Which is better between a CAS2007 server or CAS2010 server as the autodiscover endpoint? we have no plan to get rid of EX2007 for long time, so I guess I need both certificates even the autodiscover only has one entry point to outside devices. Thanks for any suggestions.
 
S

Sembee [MVP]



Autodiscover will work with both versions, because it queries the domain for the information for the user.
The cost savings of using SRV records are minimal - you can get a UC certificate for less than $80 a year. http://CertificatesForExchange.com/

Get a 10 name certificate and put both Exchange 2007 and 2010 URLs in to it. The same certificate can then work for both servers.

Simon.

Simon Butler, Exchange MVP
Blog | Exchange Resources
 
A

atcnf2008



Thank you for the prompt reply.

I have had ssl for CAS2007 long time ago and still valid, do I gain anything if I replace its SSL with a new SAN SSL? I don't see the point why cas2007 should be included as part of new SAN certificate, I'm confused. Thank you for any suggestions.
 
S

Sembee [MVP]



SSL is more than just OWA. If you using Outlook 2007 or higher then web services are used by Outlook to connect to the server. While you can use a self generated certificate this can cause certificate prompts, and therefore a commercial certificate is recommended.
I tend to have all client facing systems in the certificate so that there are no issues with the SSL certificate support no matter which server is used.

S

Simon Butler, Exchange MVP
Blog | Exchange Resources
 
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