Hi All,

I recently installed Ex 2013 in our environment.  We have two domains setup to receive mail from domain1.com and domain2.com - I created certificate request for both domain names in Exchange but for some reason when I ask third party company to provide certificate for all the domains (including autodiscover.domain1.com and autodiscover.domain2.com) - they only gave autodiscover.domain2.com.  I am ok with that as half of the users have domain2.com email accounts and domain1.com users do not care if they have to go to autodiscover.domain2.com/owa for webmail. The problem is when users with domain1.com email account opens up Outlook they are getting certificate error about autodiscover.domain1.com.

How do I solve this problem?  Should I create a new certificate with autodiscover.domain1.com or should I ask  certificate provider to give me new certificate and renew the certificate in Ex 2013?

• Edited by SanKeon Thursday, September 10, 2015 5:31 AM

For Outlook, you can use DNS SRV record to eliminate the certificate warning. Something like

domain1.com SRV autodiscover.domain2.com 443 0 0

• Edited by Li Zhen Thursday, September 10, 2015 6:16 AM