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Will SBS Self Signed SHA1 certificates work with RWW after 2017?

Posted on 2016-11-16
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Last Modified: 2016-11-23
Hi,

We've inherited a few customers who occasionally use RWW or OWA and have valid SHA1 SBS self signed certificates.
They installed using the SBS generated Certificate bundle on their remote PC's.
Even though they get the warning on the URL bar, will they still be able to use Remote Web Workplace or OWA with these certs?
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Question by:Ace-IT
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by:Cris Hanna
ID: 41891429
What is the warning for?
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by:Ace-IT
ID: 41892328
Sorry, the question is in the subject.
I'm wondering if they'll still be able to use the SBS self signed sha1 cert for RWW/Owa after Jan 2017.
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Cris Hanna earned 2000 total points
ID: 41892491
Actually starting in Feb, they will be completely blocked...but this is a really easy fix...spend 5.00/yr for a trusted single name cert using the SBS trusted cert wizard in the console
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by:Ace-IT
ID: 41892508
Thanks Cris.

Does this mean the Self Signed one will continue to work for the internal .local DNS and the trusted single name cert will be for a single external DNS (remote.domainname.com for example?)

The issue with this is that you need a wildcard/UCC cert to cover the Autodiscover & Remote. or Mail. sub domains, otherwise Activesync, Outlook Over RPC etc. won't work I believe?
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by:Cris Hanna
ID: 41892682
Someone has given you bad information about needing a UCc cert.   Only a single name cert is required.  . Local is not supposed in any certain now.
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by:Ace-IT
ID: 41898414
So are you saying that only remote.contoso.com needs an ssl cert and not autodiscover.contoso.com for Outlook anywhere or RWW client to connect without ssl errors?
I know that .local internal domain names aren't used anymore but SBS 2008-11 uses this as default and a lot of them still have it.
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by:Cris Hanna
ID: 41898457
That's what I'm saying and it's always been true.   In fact updates were issued that remove the .local portion when doing a request for a 3rd party cert
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by:Ace-IT
ID: 41900024
OK Thanks for that.
It looks like there is additional configuration for the External DNS to allow autodiscover on a single cert too:
http://www.thirdtier.net/2011/06/setting-up-autodiscover-for-sbs-2011/
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by:Cris Hanna
ID: 41900027
that's correct.  Susan's original article for SBS is right here http://blogs.msmvps.com/bradley/2008/12/19/autodiscover-and-dns/
but it's quick to set up
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