Exchange Certificate Issue (Internal Users)

Posted on 2012-03-28
Last Modified: 2012-04-01
Hi all,

Bit stuck with this, I have our company wild card cert installed in our new Exchange 2010 server… external users are loving it! But internal users get a certificate error every time they start Outlook. of course it’s going to tell them the name is wrong, because they are using mail server, not to connect.

How do I fix this without getting a new cert? is there some work around?
Question by:liminal
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2

Author Comment

ID: 37780244
Ok clearly I don't know enough about certs.

But If my mail server is called

should not a wildcard cert of


cover it... or not?

Expert Comment

ID: 37780330
are both external and internal domains are same??

Author Comment

ID: 37780362
Ahh no

External is

internal is

Yeah the error is the name on the security certificate does not match the name of the site.

So only a SAN cert will fix this?

Accepted Solution

darasunil earned 500 total points
ID: 37781217
yes .. you have to go for..

Author Closing Comment

ID: 37794132

Featured Post

Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Read this checklist to learn more about the 15 things you should never include in an email signature.
This article will help to fix the below error for MS Exchange server 2010 I. Out Of office not working II. Certificate error "name on the security certificate is invalid or does not match the name of the site" III. Make Internal URLs and External…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit If you want to manage em…

630 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question