Microsoft KB Archive/251097
Article ID: 251097
Article Last Modified on 10/28/2006
- Microsoft Exchange Server 5.0 Standard Edition
- Microsoft Exchange Server 5.5 Standard Edition
This article was previously published under Q251097
When you try to connect to Exchange Server by using Post Office Protocol 3 (POP3) or Internet Message Access Protocol (IMAP) over Secure Sockets Layer (SSL), the following event is logged in the application event log of the Exchange Server computer:
If you are using Microsoft Outlook Express as a client, you may receive the following error message:
The SSL certificate is not installed on the protocol that you are using, or the certificate is improperly installed.
To resolve this problem, make sure that the certificate has been installed correctly. For additional information about how to install the certificate correctly, click the article number below to view the article in the Microsoft Knowledge Base:
175439 XFOR: Enabling SSL For Exchange Server
If you are using the version of Key Manager that is installed with the Microsoft Windows NT version 4.0 Option Pack or the Microsoft Internet Information Services (IIS) in Exchange Server 4.0 or later, make sure that that the key is installed for the default IP address, or the specific IP address of the server:
- In Microsoft Management Console (MMC) for IIS, click Key Manager to start Key Manager.
- If the word "Default" is not displayed next to the keys for each protocol, you need to add it:
- Double-click each key to open the IP bindings.
- Click Default for all of the unspecified IP addresses.
After you perform these steps for the Exchange Server SMTP protocol, you must restart the Exchange Server Internet Mail Service.
For additional information about how to enable SSL for Exchange Server with a certificate obtained from a third party authority, click the article number below to view the article in the Microsoft Knowledge Base:
249029 XFOR: Using a Verisign Certificate with Exchange Server Secure Sockets Layer
Keywords: kbprb KB251097