Event ID - 1239

Event Id1239
DescriptionRegister LDAP SSL protocol failed with error 10048. The LDAP SSL server is not available. Make sure port number 636 is not used by another application .
Event InformationAccording to Microsoft:
This error means that the LDAP query is not binding successfully to the LDAP server. Check to see what Authentication Methods have been checked (Allowed) on that server. Also, make sure that the server protocol settings are not conflicting with the Site Level protocol settings.
If you set the Incoming-Msg-Size-Limit attribute to, for example 637, using the Exchange Server Administrator program in raw mode, you can effectively change the port used by the Exchange Server LDAP SSL service for listening. To do so:
WARNING: If you use the raw mode of the Exchange Server Administrator program (admin /r) incorrectly, serious problems may occur that may require you to reinstall Microsoft Windows NT Server, Microsoft Exchange Server, or both. Microsoft cannot guarantee that problems that result from using raw mode incorrectly can be solved. Use raw mode at your own risk.
Install the latest service pack for Exchange 5.5
1. Start the Microsoft Exchange Server Administrator program in raw mode by typing the following at a command prompt:
c:\exchsrvr\bin\admin /r
2. Select the Protocols container of the Site or Server which depends on the scope of this setting.
3. Select the LDAP component.
4. On the File menu, click Raw Properties.
5. In the List Attributes of the Type drop-down box, select All.
6. In the Object Attributes list, scroll down to, and select the Incoming-Msg-Size-Limit attribute.
7. In the Edit Value text box, type the port you want to use.
8. Click Set and make sure the Edit Value and Attribute Value are the same.
9. Click OK to close the dialog box.
10. Stop and restart the Exchange Server Directory service.
Reference LinksPRB: Event 4214 When You Play COM+ Queued Component

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