The wiki https://sourceforge.net/p/sipe/wiki/How%20to%20setup%20an%20account/#office-365-account should mention using a server of sipdir.online.lync.com:443
if auto-discovery does not work.
Fuller documentation of DNS records expected might be helpful as well.
Ticket moved from /p/sipe/bugs/324/
Can't be converted:
Improvement suggestions are not bugs.
Those are already documented in the FAQ
FAQ and account setup pages updated.
Closing.