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How should a srv-record look like in DNS?

Posted on 2014-11-13
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Last Modified: 2014-12-04
Hi,

we are trying to get outlook work without SSL-errors from extern. On the exchange server there is a correct certificate for autodiscover.domain.com
If i connect over Internet to the domain, outlook throws a warning and shows the certificate of the webserver. On the webserver there is a A-record in DNS that forwards the outlook client to the correct exchange-server.
After the warning everything is fine.
Ithink the A-record should be deleted and ther have to be a SRV-record in DNS.
Would this work:
_autodiscover._tcp.domain.com
and
_https._tcp.domain.com

or should it be
_autodiscover._tcp.autodiscover.domain.com ?

And what about https ? Is this correct for using browser and OWA with thos SRV-record ?


Thanks in advance for helping answers

loosain
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Question by:loosain
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by:
Paul Tozer earned 500 total points
ID: 40440871
You should really use a public SAN certificate (sometimes called a unified communications certificate) with both your owaaddress.yourdomain.com and the autodiscover.yourdomain.com in it. This should be from a public SSL provider otherwise the root certificate from your certificate authority needs installing on every device, as if you don't you'll get a certificate error showing it isn't trusted.

You can alternatively use SRV records which are set as follows:

_autodiscover._tcp.yourdomain.com. 3600 IN SRV 0 5 443 owaaddress.yourdomain.com.
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Author Closing Comment

by:loosain
ID: 40481523
The SRV record made it even worse... We exported the certificate from the SBS inclusive private key to an pfx-file and imported it to the webserver. Now everyything is running fine without warnings or errors.
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