[Dovecot] issues with 2.1b1 on OS X

[Timo Sirainen]

On Sat, 2011-11-19 at 14:05 -0500, metro_domain_admin at fastmail.fm wrote:
> More important, Dovecot aborts on launch with the following error:
> 
>     Nov 19 10:23:52 kerio2 dovecot[33553]: master: Fatal: kevent(EV_ADD,
>     READ, 16) failed: Invalid argument

This probably helps:

service stats {
  fifo_listener stats-mail {
    mode = 0
  }
}

Since this fails only in OSX 10.5 (not 10.6), I don't know if I'll
bother adding any special code to work around it. In any case it means
that kevent() can't be used on a FIFO, and that means you can't use
v2.1's stats tracking feature. Or possibly you could try if it works
with configure --with-ioloop=poll or select instead of kqueue.