vpopmail POP: "ERR aac, chiled crashed" after reboot, core dumped

[Chris Shenton]

Self-follow-up, hopefully useful.

I truss the process running the POP tcpserver, then the process it
forks when I connect to the POP port.   I don't know if the ERR#9 is
fatal, and unfortunately can't trace the next forked process 33323
because the child crashes immediately after displaying the info.

Does this help at all?  Thanks.

mahe# ps -axww|grep tcpser
33265  ??  S      0:00.00 tcpserver -v -u 82 -g 65533 0 smtp /var/qmail/bin/qmail-smtpd
  276  p0- S      0:03.25 tcpserver -v -u 82 -g 65533 0 smtp /var/qmail/bin/qmail-smtpd
32797  p1  I      0:00.02 tcpserver 0 pop3 /var/qmail/bin/qmail-popup foo.example.net /usr/local/vpopmail/bin/vchkpw /var/qmail/bin/qmail-pop3d Maildir

mahe# truss -p 32797
(null)()                                         = 0 (0x0)
sigprocmask(0x1,0xbfbffcc8,0x0)                  = 0 (0x0)
fork()                                           = 33316 (0x8224)
close(0)                                         = 0 (0x0)
sigprocmask(0x2,0xbfbffcc8,0x0)                  = 0 (0x0)

mahe# truss -p 33316
(null)()                                         = 1 (0x1)
read(0x0,0x804bfe0,0x80)                         = 14 (0xe)
fcntl(0x1,0x3,0x0)                               = 2 (0x2)
close(2)                                         = 0 (0x0)
fcntl(0x1,0x0,0x2)                               = 2 (0x2)
close(3)                                         ERR#9 'Bad file descriptor'
pipe()                                           = 3 (0x3)
fork()                                           = 33323 (0x822b)
close(3)                                         = 0 (0x0)
write(4,0x804c100,62)                            = 62 (0x3e)
close(4)                                         = 0 (0x0)
SIGNAL 20
wait4(0x822b,0xbfbffbcc,0x0,0x0)                 = 33323 (0x822b)
select(0x2,0x0,0xbfbffa38,0x0,0xbfbffa30)        = 1 (0x1)
write(1,0x804c080,26)                            = 26 (0x1a)
exit(0x1)                                       process exit, rval = 256