Autodiscover FQDN certificate for secondary domain email?

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s10xtremenlow



Currently we have a single domain name, email, etc and it is CompanyA.com. We also have CompanyB.com as a secondary email address that we accept and it is some user's primary email address.

Do we need to have two have both Autodiscover.CompanyA.com and Autodiscover.CompanyB.com on the SAN certificate if we want to use autodiscover outside of our network? Also, do we need to create a split-dns inside for the CompanyB.com for Autodiscover?
 
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Brian Desmond -MVP-



If you want this to work across the broadest set of devices possible then yes you'll want autodiscover.companyb.com too. If you're willing to sacrifice the occasional mobile device in particular, you can use an SRV record and point to autodiscover.companya.com and then you won't need to update the cert.

My Book - Active Directory, 4th Edition
My Blog - www.briandesmond.com
 
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