SIP and Windows LIve Communication Server

Daniel Atallah daniel.atallah at
Tue Jul 15 22:51:23 EDT 2008

2008/7/2  <amadys at>:
> Hi , does anyone use pidgin to connect to a Windows Live Communication
> Server (WLCS) joined to a Windows Domain using SIMPLE (SIP) protocol.
> I need to authenticate my domain user in the WLCS , but when I use the
> format domain\username on the username field of Pidgin, the server answer
> with Malformed From or To , it seem to me that the backslash is introducing
> some kind of weird character in the authentication string. I use the format
> username (without the domain and the backslash) the server can't
> authenticate my user.
> I have been sniffing on the connection to see all this.
> Can anyone help me with this ?
> Does anyone has experienced this behavior and what is most  important, does
> anyone has solved this before ?

The SIP/SIMPLE protocol doesn't currently work with MS LCS. See


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