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CAS array name is not required in SAN certificate<br />
You need to setup Split DNS so your internal Exchange hostnames are same as external hostnames
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CAS array name is not required in SAN certificate
You need to setup Split DNS so your internal Exchange hostnames are same as external hostnames

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Thanks for your comment. <br />
<br />
SAN cert says webmail.domain.org, autodiscover.domain.org.<br />
Outlook is connecting to cas1.localdomain.org, cas2.localdomain.org<br />
<br />
we used to have two TMGs. They're gone now. And we've applied the public cert to the cas servers.<br />
<br />
I'm &nbsp;a little lost here.
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Thanks for your comment.

SAN cert says webmail.domain.org, autodiscover.domain.org.
Outlook is connecting to cas1.localdomain.org, cas2.localdomain.org

we used to have two TMGs. They're gone now. And we've applied the public cert to the cas servers.

I'm  a little lost here.

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Please check below article<br />
<br />
<a href="http://exchange.sembee.info/2010/install/clientaccesshostnames.asp" rel="ugc">http://exchange.sembee.info/2010/install/clientaccesshostnames.asp</a><br />
<a href="http://www.puryear-it.com/blog/2013/03/18/fixing-certificate-errors-in-outlook-for-exchange-2010/" rel="ugc">http://www.puryear-it.com/blog/2013/03/18/fixing-certificate-errors-in-outlook-for-exchange-2010/</a><br />
<br />
Mahesh
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Please check below article

http://exchange.sembee.info/2010/install/clientaccesshostnames.asp [http://exchange.sembee.info/2010/install/clientaccesshostnames.asp]
http://www.puryear-it.com/blog/2013/03/18/fixing-certificate-errors-in-outlook-for-exchange-2010/ [http://www.puryear-it.com/blog/2013/03/18/fixing-certificate-errors-in-outlook-for-exchange-2010/]

Mahesh

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But the SAN SSL still has to have the server name in it yes?
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But the SAN SSL still has to have the server name in it yes?

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Is it possible to take the SAN cert for exchange 2010 I got from Godaddy and push it to all our clients so Outlook doesn't keep yelling about our internal CAS array not being in the SAN cert?
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Is it possible to take the SAN cert for exchange 2010 I got from Godaddy and push it to all our clients so Outlook doesn't keep yelling about our internal CAS array not being in the SAN cert?

SAN Cert SSL Hell

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.