The global addressbook in Microsoft Outlook provided by Exchange already contains all TU Dresden certificates. Please configure the LDAP directory only to find certificates of other universities and institutions in the DFN.
The following describes the configuration of Microsoft Outlook using Windows for the integration of the DFN PKI LDAP directory service.
In MS Outlook, select the "File" tab -> "Account Settings" -> "Account Settings".
Now select the "Address Books" tab and click on "New...".
Select "Internet Directory Service (LDAP)" and click "Next".
Fill in ldap.pca.dfn.de as "Server Name" and click on "More Settings".
In the tab "Connection" please enter ldap.pca.dfn.de as display name and 636 as port number. Please tick the "Use Secure Socket Layer" option box.
Change to tab "Search" and under "Search Base" fill in the "Custom" field with O=DFN-Verein,C=DE . Click on "OK".
You are back to the LDAP settings. Click on "Next" then "Finish" to end the account creation.
You can find your newly created LDAP directory in the "Address Book" tab of the "Account Settings". Close the window and restart Outlook.
When you write a new mail, you can search the LDAP directory to find the recipient by clicking Address Book.
Outlook offers them very extensive search options, especially if you click on "Advanced Search".
If you want to send an encrypted e-mail, please click on the "lock" symbol in the "New E-mail" window. While sending, Outlook searches in the DFN PKI LDAP directory service for the appropriate certificate (if exists) and encrypt the message with the public key of the receiver.