We have our ALM setup running on windows platform on 12.60P5, it was configured to work for both internal users and external users, internal users access ALM on xyz.com which works fine, external users access ALM on abc.com which fails with following error
this was working fine earlier and now is a issue, abc.com works as reverse proxy which in backend connects to xyz.com

HTTP ERROR 400

Problem accessing /qcbin/. Reason:

    Host does not match SNI<br /><br />@<a class="cma-user-profile-link" href="https://eyeontesting.com/members/pt-barnum">pt-barnum</a>  @<a class="cma-user-profile-link" href="https://eyeontesting.com/members/ghops">Gary Hopson</a><br />@<a class="cma-user-profile-link" href="https://eyeontesting.com/members/dan">Dan</a> Please advise