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Lync 2013 Certificate requierment

I need to deploy lync 2013 in my domain (xyz.com). Due to compliance limitation i cant build an internal CA server now. I am planing to buy certificate for my front end server from external vendor. However, as i don't own the public domain name (xyz.com) vendors are not issuing me even internal certificate. can i change the FQDN of my lync from xyz.com to abc.com (one i own)?
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biplabmukh
Asked:
biplabmukh
1 Solution
 
David Johnson, CD, MVPOwnerCommented:
you will also need the infrastructure for the domain that you own for the lync server.. you simply can't have abc.com cert for def.com lync server
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Jakob DigranesSenior ConsultantCommented:
just to make sure I understand --
on the inside, you have domain1.com (and this is .com and not .local, .ad or .internal? )
and on the outside you have domain2.com?

I've used public certs only for one Lync installation - but this one needed both the external and internal domain names
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Leon FesterIT Project Change ManagerCommented:
can i change the FQDN of my lync from xyz.com to abc.com (one i own)?
Yes, you can change the FQDN to any domain that you have.
Be sure to re-run the topology builder again.

Certificates are used to create a secure channel and provided that the correct CA or certificate chains are installed then it should work.

Internal CA is not entirely needed as you can use self-signed certs internally but in your case I think it would be less complicated if you use the public certs.

Is there any chance that there is an existing wildcard certificate for xyz.com? You should be able to re-use it in your Lync setup.
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biplabmukhAuthor Commented:
Thanks all for the input. After all alternative we have extended the retirement of out CA server so we don’t need to work on above requirement.
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