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Cannot Sign to Office Communicator with email address RRS feed

  • Question

  • Hello I have installed Office Communicator Standard Edition in the office, we only want to use the server for IM and presence internally. The Active Directory has a single domain of the format <domain>.local. I have enabled three users with the SIP of the format <firstname>.<lastname>@<domain>.local, sign on works fine, however users cannot see each other, they appear greyed out, I have then tried changing the SIP format to the email address which uses our external domain name @<domain>.com, when I do that sign on no longer works and I get the following error:


    Cannot sign in to Communicator because this sign-in address was not found. Please verify the sign-in address and try again. If the problem persists, contact your system administrator.

    After a bit of research I realized that the problem is that I need to add our real domain to the Comunicators server so it can do the sign on with the email address, however I also need to add appropriate DNS records and I am not sure how to go about that as our internal DNS is just for the domain <domain>.local.

    Can you let me know how I can go about this?

    Kind Regards

    Ana Romo
    Wednesday, September 16, 2009 3:51 PM

Answers

  • Thank you very much for the reply, my OCS is now up and running

    Kind Regards

    Ana Romo
    • Marked as answer by JDTSMAN Thursday, September 17, 2009 10:27 AM
    Thursday, September 17, 2009 10:27 AM

All replies

  • Will I need to create a new zone on my internal DNS for the domain <domain>.com? I could then add the SRV record and the A record for the FQDN of the Communicator server, will this affect the certificate? The certificate was issued to the FQDN of the Communicators Server which is on the <domain>.local domain

    Kind Regards

    Ana Romo
    Wednesday, September 16, 2009 4:10 PM
  • Yes, you will need to create a split dns like you told. Then create an A record pointing to IP address of OCS server.

    This will affect the certificate, to correct this you will need to add in SAN (Subject Alternative Name) the A record which you have created.

    Take a look in these examples:

    http://fawzi.wordpress.com/2008/02/16/configuring-ocs-2007-for-dns-splitting/

    http://blogs.microsoft.co.il/blogs/oshria/archive/2009/01/08/configuring-ocs-2007-for-dns-splitting.aspx


    Bruno Estrozi - MCSE +S +M/MCTS/MCITP - Unified Communications Specialist | http://brunoestrozi.com.br
    • Proposed as answer by Bruno Estrozi Thursday, September 17, 2009 1:49 PM
    Wednesday, September 16, 2009 5:52 PM
  • Thank you very much for the reply, my OCS is now up and running

    Kind Regards

    Ana Romo
    • Marked as answer by JDTSMAN Thursday, September 17, 2009 10:27 AM
    Thursday, September 17, 2009 10:27 AM