With Exchange 2007, if you encounter a problem with the certificate when connecting to OWA and when you configure an Exchange 2007/ Pushmail/ ActiveSync devices with iPhone (2.2.1) and Windows Mobile, here’s the procedure I used to solve this problem.

The OWA warning message doesn’t affect your OWA connexion, however the problem of certificate affect the IPhone access to Exchange 2007/ ActiveSync. Solve the OWA problem solves the problem with the IPhone, or vice versa. With Exchange 2K7 OWA and when you connect to your mailbox by OWA and your browser tells you that there is a problem of certificate with the following message:

  1. The security certificate presented by this website was not issued by a trusted certificate authority.
  2. Security certificate problems may indicate an attempt to fool you or intercept any data you send to the server.
  • With your iPhone or Windows Mobile, when you configure your Exchange account, after verification of access, your iPhone tells you that:
  1. The certificate for the domain xxx is not allowed
  2. The error is that you have not installed a certificate containing the name of domain you are attempting to access.
  3. If your URL to access OWA For example: https://mail.company.com/owa (defined in the CAS for OWA URL access), then you need to generate from your Exchange 2007 a certificate containing precisely this domain name.

MANIPULATIONS SUMMARIZE

  1. Generating PowerShell in your Exchange 2007 CAS with a the certificate option– domaineName mail.company.com
  2. Under PowerShell, enable the certificate for the IIS service
  3. Copy the Personal Certificate in the your Exchange le trusted root certification Authorities
  4. Export it from the trusted root certification Authorities
  5. Install it on your PC to access OWA with no warning message
  6. Install it on your IPhone to access to your Exchange 2007 mailbox