[CentOS] CentOS 7.1.1503 + Dovecot + IPA

Hi Everyone,

I'm running an IPA server on CentOS 7 successfully and now I want to
change my Dovecot setup to use GSSAPI for IMAP authentication instead
of a flat "userdb" file. I've already joined the Dovecot box to the IPA
domain - ssh and ipa policies and all that are working properly.

I read a number of articles on how to configure Dovecot for GSSAPI auth
and they all said the same thing (even Red Hat's official how to on it
agreed). But, when I set up Evolution on my Fedora 22 system to use
GSSAPI, Dovecot's log records this:

Sep  8 13:49:55 mailman02 dovecot: auth: Panic: file auth-request.c:
line 733 (auth_request_is_disabled_master_user): assertion failed:
(request->requested_login_user != NULL)
Sep  8 13:49:55 mailman02 dovecot: auth: Error: Raw backtrace:
/usr/lib64/dovecot/libdovecot.so.0(+0x6a02e) [0x7f27af22202e] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x6a10e) [0x7f27af22210e] ->
/usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7f27af1da52c] ->
dovecot/auth [1 wait, 0 passdb, 0 userdb](+0x15922) [0x7f27af6c7922] ->
dovecot/auth [1 wait, 0 passdb, 0
userdb](auth_request_lookup_credentials+0x32) [0x7f27af6c9332] ->
/usr/lib64/dovecot/auth/libmech_gssapi.so(+0x2134) [0x7f27ad615134] ->
dovecot/auth [1 wait, 0 passdb, 0
userdb](auth_request_handler_auth_continue+0xe5) [0x7f27af6caf15] ->
dovecot/auth [1 wait, 0 passdb, 0 userdb](+0x109da) [0x7f27af6c29da] ->
/usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x27)
[0x7f27af232a47] ->
/usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0xff)
[0x7f27af2338cf] ->
/usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f27af232598] 
-> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7f27af1df9e3] -> dovecot/auth [1 wait, 0 passdb, 0
userdb](main+0x391) [0x7f27af6c07f1] ->
/lib64/libc.so.6(__libc_start_main+0xf5) [0x7f27ae7ceaf5] ->
dovecot/auth [1 wait, 0 passdb, 0 userdb](+0xe9e1) [0x7f27af6c09e1]
Sep  8 13:49:55 mailman02 dovecot: auth: Fatal: master: service(auth):
child 23185 killed with signal 6 (core dumps disabled)

I've already asked on the Dovecot list about my GSSAPI auth problems
and was told that this is a bug in Dovecot which does not exist in the
latest release (I don't know when the problem was actually fixed).

My question is simply this: does anyone else have
dovecot-2.2.10-4.el7_0.1.x86_64 working with GSSAPI auth against an IPA
server? IPA is also running on CentOS 7.1.1503.

Regards,

Ranbir

-- 
Kanwar R.S. Sandhu