The certificate chain was issued by an authority that is not trusted.

I can not get a certificate to work correctly on Exchange 2003, IIS 6.0 and ISA 2004.
The error in the browser is “This certificate cannot be verified up to a trusted certification authority. Issued by Comodo Class 3 Security Services CA.”

I am trying to do the Microsoft Active Sync for the mobile phones and Outlook Web Access.


Please raise a ticket at
Click ‘Submit a Ticket’

The support team have the answer to this problem.

As a company we are working towards having our roots included in Windows Mobile 6.
But do have an interim solution available.