Version: 1.10.0 (using KDE 4.1.0) Installed from: Ubuntu Packages Compiler: gcc (GCC) 4.2.3 (Ubuntu 4.2.3-2ubuntu7) x86_64 OS: Linux My mail server does support GSSAPI authentication. If i press 'Check what the server supports', kmail detects that i have Encryption None and TLS and auth methods PLAIN and GSSAPI. But when i select GSSAPI for auth, and try to send i mail i get the error message auth method not supported. When i select NTLM auth and try it again, everything works fine. So i think the two options are somehow swapped.
Fixed in r848388, see http://websvn.kde.org/?view=rev&revision=848388.