[Dovecot] possible bug leading to lmtp crashes

[Trever L. Adams]

I have been using Samba 4 kerberos and ldap with dovecot. Samba 4
changed a while back (resulting in me asking for help) which requires
kerberos auth for ldap lookups. My setup worked perfectly before hand.
Before and after were with dovecot-2.0.11 and the after also happens
with 2.0.11.

The only changes were (in my ldap.conf for dovecot -- changes are new
lines starting with *, * is not in the conf, just showing changes):

hosts = example.org
base = dc=example,dc=org
ldap_version = 3
user_attrs =  userPrincipalName=user
user_filter =
(&(objectClass=person)(|(mail=%u)(sAMAccountName=%u)(userPrincipalName=%u)))
*dn = MACHINEACCOUNT$@EXAMPLE.ORG
*sasl_bind = yes
*sasl_mech = GSSAPI
*sasl_realm = EXAMPLE.ORG
*#sasl_authz_id = MACHINEACCOUNT$@EXAMPE.ORG
# For using doveadm -A:
iterate_attrs = userPrincipalName=user
iterate_filter = (objectClass=person)

in dovecot.conf:
import_environment = TZ KRB5CCNAME=/etc/dovecot/krb5.cc

With that do any of the following lines from the referenced hg rev set
mean I am missing anything on my import_environment variable? Or is it
all good?

10.15 +/* <settings checks> */
10.16 +#ifdef HAVE_SYSTEMD
10.17 +# define ENV_SYSTEMD " LISTEN_PID LISTEN_FDS"
10.18 +#else
10.19 +# define ENV_SYSTEMD ""
10.20 +#endif
10.21 +#ifdef DEBUG
10.22 +# define ENV_GDB " GDB"
10.23 +#else
10.24 +# define ENV_GDB ""
10.25 +#endif
10.26 +/* </settings checks> */
10.27 +
10.28 static const struct master_settings master_default_settings = {
10.29 .base_dir = PKG_RUNDIR,
10.30 .libexec_dir = PKG_LIBEXECDIR,
10.31 + .import_environment = "TZ" ENV_SYSTEMD ENV_GDB,


If I am not missing anything, then there seems to be a problem with
kerberos sasl with ldap lookups.

Thank you,
Trever Adams

Reference: http://hg.dovecot.org/dovecot-2.0/rev/cec7fa92ff48
Reference: https://bugzilla.redhat.com/show_bug.cgi?id=697325 (backtrace
via abrtd is included here)
-- 
"Avert misunderstanding by calm, poise, and balance." -- Unknown


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