dovecot auth-worker error happens when I enabled the dovecot to consider both the system account and the MySQL virtual mailbox databases.

[Emmanuel Chanel]

Core Dump(?) from /var/log/apport.log on Ubuntu Server 14.04 LTS...
----------------------------------
ERROR: apport (pid 29249) Mon Mar  9 01:26:31 2015: called for pid 
29239, signal 11, core limit 0
ERROR: apport (pid 29249) Mon Mar  9 01:26:31 2015: executable: 
/usr/lib/dovecot/auth (command line "dovecot/auth -w")
ERROR: apport (pid 29249) Mon Mar  9 01:26:31 2015: Unhandled exception:
Traceback (most recent call last):
   File "/usr/share/apport/apport", line 391, in <module>
     if is_closing_session(pid, pidstat.st_uid):
   File "/usr/share/apport/apport", line 213, in is_closing_session
     env = e.read().split('\0')
   File "/usr/lib/python3.4/encodings/ascii.py", line 26, in decode
     return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xab in position 0: 
ordinal not in range(128)
ERROR: apport (pid 29249) Mon Mar  9 01:26:31 2015: pid: 29249, uid: 0, 
gid: 0, euid: 0, egid: 0
ERROR: apport (pid 29249) Mon Mar  9 01:26:31 2015: environment: environ({})
ERROR: apport (pid 29260) Mon Mar  9 01:26:37 2015: called for pid 
29241, signal 11, core limit 0
ERROR: apport (pid 29260) Mon Mar  9 01:26:37 2015: executable: 
/usr/lib/dovecot/auth (command line "dovecot/auth -w")
ERROR: apport (pid 29260) Mon Mar  9 01:26:37 2015: Unhandled exception:
Traceback (most recent call last):
   File "/usr/share/apport/apport", line 391, in <module>
     if is_closing_session(pid, pidstat.st_uid):
   File "/usr/share/apport/apport", line 213, in is_closing_session
     env = e.read().split('\0')
   File "/usr/lib/python3.4/encodings/ascii.py", line 26, in decode
     return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xab in position 0: 
ordinal not in range(128)
ERROR: apport (pid 29260) Mon Mar  9 01:26:37 2015: pid: 29260, uid: 0, 
gid: 0, euid: 0, egid: 0
ERROR: apport (pid 29260) Mon Mar  9 01:26:37 2015: environment: environ({})
ERROR: apport (pid 29264) Mon Mar  9 01:26:43 2015: called for pid 
29250, signal 11, core limit 0
ERROR: apport (pid 29264) Mon Mar  9 01:26:43 2015: executable: 
/usr/lib/dovecot/auth (command line "dovecot/auth -w")
ERROR: apport (pid 29264) Mon Mar  9 01:26:43 2015: Unhandled exception:
Traceback (most recent call last):
   File "/usr/share/apport/apport", line 391, in <module>
     if is_closing_session(pid, pidstat.st_uid):
   File "/usr/share/apport/apport", line 213, in is_closing_session
     env = e.read().split('\0')
   File "/usr/lib/python3.4/encodings/ascii.py", line 26, in decode
     return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xab in position 0: 
ordinal not in range(128)
ERROR: apport (pid 29264) Mon Mar  9 01:26:43 2015: pid: 29264, uid: 0, 
gid: 0, euid: 0, egid: 0
ERROR: apport (pid 29264) Mon Mar  9 01:26:43 2015: environment: environ({})

-- 
Emmanuel Chanel( emmanuelchanel at gmail.com )