Exchange Server Certificate Error
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Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question https://support.microsoft.com/en-us/kb/923575 and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Certificate error: The name in the certificate does not match…, Outlook http://serverfault.com/questions/672582/certificate-error-the-name-in-the-certificate-does-not-match-outlook-client client using .local up vote 1 down vote favorite We have recently had to decommission our .local certificate from Godaddy, as it will not be valid anymore. The new certificate contains the following names: mail.mydomain.com autodiscover.mydomain.com This certificate has been applied to the Exchange server and activated for all services. I was expecting clients to get errors on the certificate as they are connected to the mail.mylocaldomain.local name. I have read a lot of documentation and they all pretty much say the same thing: add new zone on local DNS server with the public domain (I added a zone mydomain.com) add a record A pointing to the local ip of the email server (I added mail.mydomain.com pointing to local IP of the server) I have issued these commands: Set-ClientAccessServer -Identity EXCHANGE-MAIL -AutodiscoverServiceInternalUrihttps://mail.publicdomain.co.uk/autodiscover/autodiscover.xml Set-WebServicesVirtualDirectory -Identity “EXCHANGE-MAIL\EWS (Default Web Site)” –InternalUrlhttps://mail.publicdomain.co.uk/EWS/Exchange.asmx Set-OABVirtualDirectory -Identity “EXCHANGE-MAIL\OAB (Default Web Site)” -InternalURL https://mail.publicdomain.co.uk/OAB Set-ActiveSyncVirtualDirectory -Identity “EXCHANGE-MAIL\Micro
Vs. External Hostname Certificate Errors in Outlook for Exchange 2010 You've deployed Exchange 2010 and installed a CA-signed https://www.puryear-it.com/fixing-certificate-errors-in-outlook-for-exchange-2010 certificate so that your ActiveSync users won't get errors when they connect. That got fixed but now your internal Outlook users are getting certificate errors! Thankfully, it's pretty http://www.shudnow.net/2013/07/26/outlook-certificate-error-and-autodiscover-domain-com-not-working/ easy to fix. Struggling with a difficult Exchange 2010 or Exchange 2013 migration? We've learned the hard lessons so you don't have to! Contact us to get certificate error your Exchange upgraded and online. Let's assume your Exchange server is known as "exch-1.domain.local" internally but as "mail.domain.com" externally. Solution If you haven't already, you need to add your public zone ("domain.com" in this example) to your internal IP and setup a record to point "mail.domain.com" to the same IP as "exch-1.domain.local". I like using CNAMEs certificate is invalid for this so you don't have to update 2 records should it ever become necessary. Like a lot of Exchange 2010 howtos, this one uses the Exchange Management Shell on your Exchange 2010 server. I'm a big fan of backing up settings before changing them so run a few "get" commands first: > Get-WebServicesVirtualDirectory | Select InternalUrl,BasicAuthenticationExternalUrl,Identity | Format-List InternalUrl : https://exch-1.domain.local/EWS/Exchange.asmx BasicAuthentication : False ExternalUrl : https://mail.domain.com/ews/exchange.asmx Identity : EXCH-1EWS (Default Web Site) > Get-OabVirtualDirectory | Select InternalURL,ExternalURL,Identity | FL InternalUrl : http://exch-1.domain.local/OAB ExternalUrl : https://mail.domain.com/OAB Identity : EXCH-1OAB (Default Web Site) > Get-ActiveSyncVirtualDirectory | Select InternalUrl,ExternalUrl,Identity | fl InternalUrl : https://exch-1.domain.local/Microsoft-Server-ActiveSync ExternalUrl : https://mail.domain.com/Microsoft-Server-ActiveSync Identity : EXCH-1Microsoft-Server-ActiveSync (Default Web Site) Once you have all that info backed up somewhere safe (just copy it to Notepad and save the file), you can start fixing things: > Set-WebServicesVirtualDirectory -Identity "EXCH-1EWS (Default Web Site)" -InternalURL https://mail.domain.com/EWS/Exchange.asmx -BasicAuthentication:$true > Set-OabVirtualDirectory -Identity "EXCH-1OAB (Default Web Site)" -InternalUrl https://mail.domain.com/OAB > set-ActiveSyncVirtualDirectory -Identity "EXCH-1Microsoft-Server-ActiveSync (Default Web Site)" -InternalUrl "https://
Errors which applies to Outlook 2007, Outlook 2010, and Outlook 2013. You can see that post here. That blog post describes an incorrect certificate on Exchange itself. For example, you make a connection to Exchange and your InternalURLs, ExternalURLs, and AutodiscoverServiceInternalURI FQDN is not defined on the certificate. Therefore, you must update the InternalURLs, ExternalURLs, and AutodiscoverServiceInternalURI to match the certificate FQDN. This specific issue is a bit different. This issue is that when you are trying to make a connection to Autodiscover via https://autodiscover.domain.com, the Outlook client does not successfully make a connection to it and you get a certificate error. The certificate you see pop up in Outlook during the error isn't even the certificate that is located on Exchange. The certificate error that pops up shows you that it is finding the certificate on your company's public website. So the million dollar question? Why the error and why is it showing the company's public website's certificate. Well first, let's explore a little on the steps External Autodiscover goes through in order to find Exchange. Internal Autodiscover and the Service Connection Point The Autodiscover service is a mechanism that can do several things. Automatic Mailbox Creation Redirects Outlook 2007/2010/2013 clients to point to the correct server in which their mailbox is located Provides URLs to Web Services for Outlook 2007/2010/2013 When you first launch your Outlook client (Outlook 2007 or above required for Autodiscover access), it will search Active Directory for a Service Connection Point (SCP) record. Every time a CAS Server is installed, it will register this SCP record within Active Directory in the following location: CN=Autodiscover,CN=Protocols,CN=