[Samba] dovecot problem with 4.4.3, not with 4.4.2

[Gerben Roest]

Hi,

my dovecot installation dovecot-2.0.9-19.el6_7.2.x86_64 can't
authenticate using winbind from 4.4.3, but it can with winbind from 4.4.2.

4.4.3:

May  5 22:11:07 sambaserver auth: pam_winbind(dovecot:auth): getting
password (0x00000010)
May  5 22:11:07 sambaserver auth: pam_winbind(dovecot:auth):
pam_get_item returned a password
May  5 22:11:07 sambaserver auth: pam_winbind(dovecot:auth): internal
module error (retval = PAM_AUTHINFO_UNAVAIL(9), user = 'john')
May  5 22:11:14 sambaserver auth: pam_winbind(dovecot:auth): getting
password (0x00000000)
May  5 22:11:14 sambaserver auth: pam_winbind(dovecot:auth): internal
module error (retval = PAM_AUTHINFO_UNAVAIL(9), user = 'john')
May  5 22:11:14 sambaserver auth: pam_unix(dovecot:auth): authentication
failure; logname= uid=0 euid=0 tty=dovecot ruser=gerbenr
rhost=213.125.187.194  user=john


4.4.2:

May  5 22:18:19 sambaserver auth: pam_winbind(dovecot:auth): getting
password (0x00000000)
May  5 22:18:19 sambaserver auth: pam_winbind(dovecot:auth): user 'john'
granted access
May  5 22:18:19 sambaserver auth: pam_winbind(dovecot:account): user
'DOMAIN\john' granted access

I upgraded from 4.4.2 to 4.4.3 by doing a fresh compile with the
./configure settings from 4.4.2, then stopping samba, then "make
install" and starting samba. Then I got the problems with dovecot (no
problems with ssh).

I reverted back by stopping samba, doing a "make install" in the 4.4.2
source dir, and starting samba again, and dovecot was OK again.

any ideas? Is this a bug? In samba or dovecot?

thanks