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Exchange 2010 Autodiscover SSL Certificate

We have an Exchange 2010 server. I believe the Autodiscover is setup correctly because it works fine from within our domain. However, anyone who opens Outlook on a non-domain computer gets the attached certificate error (although, connectivity works fine after accepting). Also, setting up an account on a smartphone does not auto-configure.

I believe I need to add an SSL certificate for our Autodiscover domain (autodiscover.domain-name.com). After I purchase the SSL certificate, what other steps do I need to do to get things working? Just install the certificate on the Exchange server?

I already have an SSL certificate for mail.domain-name.com installed. Can I install a second SSL certificate for autodiscover?

Thanks.
bruno71

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Nick Rhode

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bruno71

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Nick Rhode

Most likely due to autodiscover.domain.com is missing from the ssl certificate currently installed.

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Simon Butler (Sembee)

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Steve Bottoms

Rather than buying a multi-domain cert, you might look into whether using a SAN (Subject Alternative Names) from your CA will work to list different subdomains within your domain. For example, on the cert we have here (ourmail.ourdomain.com) we have listed five total SANs: ourmail.ourdomain.com, cas01.abc.local, cas02.abc.local, autodiscover.ourdomain.com, and loadbalancer.abc.local. Our cert is thru GoDaddy and it's just a standard UCC.

Steve