It is true.

Sorry, I had enabled a wrong IP. The source computer does not access directly but it access by means of a different machine of which IP had to be enabled.

Oh yes, the DomainAuthentication works successfully after the "domain_auth_mode" has been activated.

Reference (Phil Harris email):
http://mail.zope.org/pipermail/zope-dev/2004-March/021987.html

Thanks !

Dieter Maurer escribió:

Juan Javier Carrera Obrero wrote at 2006-6-26 09:52 +0200:

...
Does the DomainAuthenticationMode of a acl_user folder runs 
successfully via Socket ?


What should "via Socket" mean?

All standard HTTP requests work "via socket".

"DomainAuthentication" seems to work because there have
been occasional questions in the mailing list and
usually no followups after the "domain_auth_mode" has
been activated.

Cannot tell you why it does not work for you...