On Fri, 2013-02-15 at 17:32 +0100, Axel Luttgens wrote:
> a pop connection hangs forever after the pass command
>
> $ telnet 127.0.0.1 110
> Trying 127.0.0.1...
> Connected to localhost.
> Escape character is '^]'.
> +OK Dovecot ready.
> user user2
> +OK
> pass pass2
>
> and the log shows (here, when the user connects for the first time)
>
> dovecot[2997]: pop3-login: Login: user=<user2>, method=PLAIN,
> rip=127.0.0.1, lip=127.0.0.1, mpid=3113, secured, session=<GTOlMjfV3gB/AAAB>
> dovecot[2997]: pop3(user2): Debug: Effective uid=100003, gid=100003,
> home=/_Data/Mailstores/100003
> dovecot[2997]: pop3(user2): Debug: Home dir not found:
> /_Data/Mailstores/100003
> dovecot[2997]: pop3(user2): Debug: fs:
> root=/_Data/Mailstores/100003/mboxes, index=, control=,
> inbox=/_Data/Mailstores/100003/mboxes/inbox, alt=
> dovecot[2997]: pop3(user2): Debug: Namespace :
> /_Data/Mailstores/100003/mboxes doesn't exist yet, using default permissions
> dovecot[2997]: pop3(user2): Debug: Namespace : Using permissions from
> /_Data/Mailstores/100003/mboxes: mode=0700 gid=-1
> dovecot[2997]: pop3(user2): Debug: Namespace :
> /_Data/Mailstores/100003/mboxes/inbox doesn't exist yet, using default
> permissions
> dovecot[2997]: pop3(user2): Debug: Namespace : Using permissions from
> /_Data/Mailstores/100003/mboxes: mode=0700 gid=-1
> dovecot[2997]: pop3(user2): Debug: Namespace :
> /_Data/Mailstores/100003/mboxes/inbox doesn't exist yet, using default
> permissions
> dovecot[2997]: pop3(user2): Debug: Namespace : Using permissions from
> /_Data/Mailstores/100003/mboxes: mode=0700 gid=-1
>
> With exactly the same config, imap connections are fully functional.
>
> Does someone have an explanation?
a) dtruss the pop3 process to see which syscall hangs. Maybe this works:
service pop3 {
executable = /usr/bin/dtruss /usr/local/libexec/dovecot/pop3
}
It logs to Dovecot's error log.
b) get gdb backtrace:
gdb -p <pid of pop3 process>
bt full
