Exchange 2010/2003 Coexistance Webmail Login Twice Published with TMG
I've seen many other postings about this, but the answer is always to enable SSO on a single listener for both URLs in TMG. That doesn't seem to be working for me. I have a legacy 2003 OWA server and new 2010 CAS server. They are both published through TMG. Both on the same listener. But I still always have to enter my password twice. They are on 2 separate firewall rules, which from my understanding is correct as each one can only point to a single internal server, but maybe my understanding of that is not correct. On the SSO tab in TMG, I have Enable Single Signon Checked and my root domain listed in the box. Anyone have any other ideas where to look? Thanks! Brian
February 2nd, 2011 1:52pm

Thanks for the reply. I have followed these instructions already when I did my config. I still have the problem. Regards, Brian
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February 3rd, 2011 12:27pm

HI Brian, I am also facing same issue. Can you please explain how u have configure TMG 2010 means you have configured 1 single rule and you are accessing Exchange 2003 mailboxes for Exchange 2010. Regards, Nitin Dongre Regards, Nitin Dongre
January 1st, 2012 1:47pm

Hi Nitin, To publish with TMG 2010 both 2010 and 2003 mailboxes you can follow my guide, http://ilantz.wordpress.com/2010/03/12/how-to-publish-exchange-2003-and-exchange-2010-with-isa-2006/ The wizard in TMG includes the directories for 2010 like /ecp , make sure you follow the article and you will be just fine :) ilantz
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January 2nd, 2012 10:18am

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