Hello,
I have a question regarding mailbox locking and hope any one can help
me to better understanding the locking of mbox
My Postfix lock option is fcntl dotlock
mailbox_delivery_lock = fcntl, dotlock
virtual_mailbox_lock = fcntl, dotlock
My Dovecot lock option is fcntl only
mbox_write_locks = fcntl
mbox_read_locks = fcntl
now, when user is download a large mail (20 MB) for example, dovecot
locks
/var/mail/user with fcntl until the users finish downloading the mail
ok here comes my question.
While the user is downloading the mail , a mail arrives so postfix make
some thing weird
1- Postfix creates /var/mail/user.lock for 5 secs , then postfix defer
the mail with reason that the /var/mail/user is locked and then delete
the /var/mail/user.lock (after 5 secs)
My question is ? why postfix create user.lock although it shouldn't
because already dovecot fcntl it …
1- Dovecot locks /var/mail/user using FCNTL
2- Posttix at the same time tries to FCNTL /var/mail/user .. but it
fail since dovecot already fcnl it.
3- Postfix at the same time add dot lock /var/mail/user for 5 secs then
remove the lock.
the question is how come postfix dot lock /var/mail although it
couldn't FCNTL the file in the first place ??????? what i was expecting
is
1- Dovecot locks /var/mail/user using FCNTL
2- Postfix tries to FCNTL /var/mail/user
3- POSTFIX WILL NOT CREATE DOTLOCK file unless the FCNTL is released by
dovecot!!!!
Please advise if postfix will dot lock the file even if it couldn't
FCNTL
the file in the first place……
Regards
