We have 2 Windows 2003 Enterprise servers running in our DMZ. One has MS ADAM installed for user management and the other is a Web server. The web server was able to iniate an LDAP connection over SSL (port 50636) to the ADAM server. However this has stopped working and we cannot resolve the problem (the server with ADAM can iniate an LDAP connection to itself on that port without problem).
You can telnet between the two servers on that port and the connection this appears to connect so we don't believe there is anything stopping the connection. Also you can initiate an LDAP connection on 50389.
Any help in troubleshooting this would be appreciated.