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Dear Colleagues, I use exim's appendfile transport, procmail and a local mutt on my system, they all (to my knowledge) use lockfiles when working with mboxes. However, `doveconf | grep lock` says dotlock_use_excl = yes lock_method = fcntl mail_max_lock_timeout = 0 mbox_dotlock_change_timeout = 2 mins mbox_lock_timeout = 5 mins mbox_read_locks = fcntl mbox_write_locks = dotlock fcntl

This patch replaces the Xen xmalloc engine with tlsf, an allocation engine that is both more space efficient and time-bounded, especially for allocation sizes between PAGE_SIZE/2 and PAGE_SIZE. The file xmalloc.c is deprecated but not yet deleted. A simple switch of a comment line in common/Makefile will change back to the legacy xmalloc/xfree if needed for testing. Code adapted from Nitin

This weekend we had a runaway email endless loop. When it was killed after 18 hours, my inbox had 135,000 messages in it...there were two messages that were being endlessly sent and bounced and I'm on the postmaster alias. Thunderbird was able to do a mass select of one of the two messages, and deleted 65,000, but after that it locked up. I ended up firing up Pine to do the final