[Dovecot] Dovecot-2.1.14 - pop3 processes always hangs forever - another follow-up

[Axel Luttgens]

Hello,

With the same basic configs as in my previous messages, I tried with the 
maildir format instead of the mbox format.

That is, in both cases ("virtual" uids/gids vs a single "real" uid/gid), 
doveconf -n shows:
        mail_location = maildir:~/maildir
instead of:
        mail_location = mbox:~/mboxes:INBOX=~/mboxes/inbox

Here too, with "virtual" uids/gids, connections thru pop hang forever, while 
imap connections behave flawlessly.

And with a single "real" uid/gid, connections thru both pop and imap behave as 
expected.

As a result, it could be inferred that the problems I am encountering with pop 
connections do not depend on the mailbox format in use, and that they are 
entirely related to "virtual" uids/gids.

To recap: with this very basic config

        # 2.1.14: /_ETC/dovecot/dovecot.conf
        # OS: Darwin 12.2.1 x86_64  
        auth_verbose = yes
        disable_plaintext_auth = no
        mail_debug = yes
        mail_location = mbox:~/mboxes:INBOX=~/mboxes/inbox
        passdb {
          args = /_ETC/dovecot/db.conf
          driver = sql
        }
        ssl = no
        userdb {
          driver = prefetch
        }

 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?

TIA,
Axel