(gdb) bt
#0  0x00007fe22067a475 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fe22067d6f0 in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fe21706eb31 in fatal () from /usr/lib/libc-client.so.2007e
#3  0x00007fe21707d556 in mail_elt () from /usr/lib/libc-client.so.2007e
#4  0x00007fe217084a2a in ?? () from /usr/lib/libc-client.so.2007e
#5  0x00007fe2173706c9 in imap_retrieve_file (dir=0x7fe1dfa9e4d0 "/var/spool/asterisk/voicemail/default/2025659/INBOX", 
    msgnum=0, mailbox=0x7fe1dfa9ddf0 "2025659", context=0x7fe1dfa9dda0 "default") at app_voicemail.c:2207
#6  0x00007fe217382ecf in forward_message (chan=0x7fe1e34a6dd8, context=0x0, vms=0x7fe1dfa9e3e0, sender=0x7fe1dfa9dda0, 
    fmt=0x7fe2175aa640 "wav", is_new_message=0, record_gain=0 '\000', urgent=0) at app_voicemail.c:8086
#7  0x00007fe21738e5e4 in vm_execmain (chan=0x7fe1e34a6dd8, data=0x7fe1dfaa4713 "2025659,s") at app_voicemail.c:11348
#8  0x0000000000526a9e in pbx_exec (c=0x7fe1e34a6dd8, app=0x7fe2185cbea0, data=0x7fe1dfaa4713 "2025659,s") at pbx.c:1622
#9  0x00007fe21de931ae in handle_exec (chan=0x7fe1e34a6dd8, agi=0x7fe1dfaa4ff0, argc=3, argv=0x7fe1dfaa4250)
    at res_agi.c:2561
#10 0x00007fe21de95aab in agi_handle_command (chan=0x7fe1e34a6dd8, agi=0x7fe1dfaa4ff0, buf=0x7fe1dfaa4700 "EXEC", dead=0)
    at res_agi.c:3458
#11 0x00007fe21de96501 in run_agi (chan=0x7fe1e34a6dd8, request=0x7fe1dfaa4f90 "agi://localhost/dialplan_inbound", 
    agi=0x7fe1dfaa4ff0, pid=-1, status=0x7fe1dfaa4fe4, dead=0, argc=1, argv=0x7fe1dfaa5018) at res_agi.c:3656
#12 0x00007fe21de977e5 in agi_exec_full (chan=0x7fe1e34a6dd8, data=0x7fe1dfaa7640 "agi://localhost/dialplan_inbound", 
    enhanced=0, dead=0) at res_agi.c:3941
#13 0x00007fe21de97923 in agi_exec (chan=0x7fe1e34a6dd8, data=0x7fe1dfaa7640 "agi://localhost/dialplan_inbound")
    at res_agi.c:3975
#14 0x0000000000526a9e in pbx_exec (c=0x7fe1e34a6dd8, app=0x7fe218037ca0, 
    data=0x7fe1dfaa7640 "agi://localhost/dialplan_inbound") at pbx.c:1622
#15 0x0000000000531029 in pbx_extension_helper (c=0x7fe1e34a6dd8, con=0x0, context=0x7fe1e34a7c28 "internal", 
    exten=0x7fe1e34a7c78 "1872025659XXXX", priority=24, label=0x0, callerid=0x7fe1e010cb50 "2025659", action=E_SPAWN, 
    found=0x7fe1dfaa9cf4, combined_find_spawn=1) at pbx.c:4918
#16 0x00000000005341a1 in ast_spawn_extension (c=0x7fe1e34a6dd8, context=0x7fe1e34a7c28 "internal", 
    exten=0x7fe1e34a7c78 "1872025659XXXX", priority=24, callerid=0x7fe1e010cb50 "2025659", found=0x7fe1dfaa9cf4, 
    combined_find_spawn=1) at pbx.c:6034
#17 0x0000000000535842 in __ast_pbx_run (c=0x7fe1e34a6dd8, args=0x0) at pbx.c:6509
#18 0x00000000005371a5 in pbx_thread (data=0x7fe1e34a6dd8) at pbx.c:6839
#19 0x000000000059011c in dummy_start (data=0x7fe1e125ce40) at utils.c:1162
#20 0x00007fe21f92bb50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#21 0x00007fe2207240ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#22 0x0000000000000000 in ?? ()
(gdb) f 5
#5  0x00007fe2173706c9 in imap_retrieve_file (dir=0x7fe1dfa9e4d0 "/var/spool/asterisk/voicemail/default/2025659/INBOX", 
    msgnum=0, mailbox=0x7fe1dfa9ddf0 "2025659", context=0x7fe1dfa9dda0 "default") at app_voicemail.c:2207
warning: Source file is more recent than executable.
2207		header_content = mail_fetchheader (vms->mailstream, vms->msgArray[msgnum]);
(gdb) p *vms->mailstream
$1 = {dtb = 0x7fe21735f840, local = 0x9efe100, 
  mailbox = 0x55843b0 "{asterisk11-6.voip.thw.gradwell.net:1430/imap/tls/user=\"2025659\"}Greetings", 
  original_mailbox = 0x7d2bf20 "{asterisk11-6.voip.thw.gradwell.net:1430/imap/user=2025659}Greetings", use = 0, 
  sequence = 5, inbox = 0, lock = 0, debug = 0, silent = 0, rdonly = 0, anonymous = 0, scache = 0, halfopen = 0, secure = 0, 
  tryssl = 0, mulnewsrc = 0, perm_seen = 0, perm_deleted = 0, perm_flagged = 0, perm_answered = 0, perm_draft = 0, 
  kwd_create = 0, uid_nosticky = 0, unhealthy = 0, nokod = 0, sniff = 0, perm_user_flags = 0, gensym = 23, nmsgs = 0, 
  recent = 0, uid_validity = 1403796341, uid_last = 0, user_flags = {0x0 <repeats 30 times>}, cachesize = 250, 
  cache = 0x9771f20, sc = 0x86a5bc0, msgno = 0, env = 0x0, body = 0x0, text = {data = 0x0, size = 0}, snarf = {name = 0x0, 
    time = 0, options = 0}, private = {search = {string = 0x0, result = 0, text = 0x0}, string = {data = 0x0, data1 = 0, 
      size = 0, chunk = 0x0, chunksize = 0, offset = 0, curpos = 0x0, cursize = 0, dtb = 0x0}}, sparep = 0x0, spare = 0, 
  spare2 = 0, spare3 = 0, spare4 = 0, spare5 = 0, spare6 = 0, spare7 = 0, spare8 = 0}