Le 7 juil. 09 à 10:02, Federico Bianchi a écrit :
The PC (Outlook) is accessing the mailbox via POP3, the iPhone is
using IMAP; please consider we are talking about a user's home
setup, so it's pretty difficult to have a more detailed report on
his part (Outlook version, iPhone OS version, xDSL router type and
configuration, etc.). The mail server 'dovecot -n' output is attached.
The symptoms: when the Mail application is "closed" on the iPhone,
Outlook still says the mailbox is in use; a Dovecot imap process is
still active for that user even after a few minutes (manually
killing it releases the lock, thereby leaving the inbox available
for Outlook).
From the client side, there is a seemingly relevant article at
http://blogs.sun.com/chienr/entry/iphone_supports_imap_idle
it describes, among others, the "Settings / Mail / Auto-Check" and
"Settings / General / Auto-Lock" parameters; from my point of view,
however, being able to solve the problem directly on the server
would be far better, and might also accomodate other broken clients
we haven't seen yet: that's why I asked you whether there is a way
to tell Dovecot only one POP3 or IMAP process from the same user,
the latest one, can be active at the same time, closing and
disconnecting all the others.
Hello Frederico,
Thanks for the additional info.
The output of dovecot -n doesn't show mbox_write_locks nor
mbox_read_locks; it could thus be supposed that the locking methods in
use are:
mbox_write_locks = dotlock fcntl
mbox_read_locks = fcntl
The question is now "who delivers mail to the mailboxes?"; since
killing the last imap process allows the pop client to open the
mailbox, one may suspect a deadlock involving the imap and the
delivery processes.
Could you have a look at
http://wiki.dovecot.org/MailboxFormat/mbox
http://wiki.dovecot.org/MboxLocking
HTH,
Axel
