[Dovecot] odd epoll() errors

[Timo Sirainen]

On Mon, 2008-12-29 at 21:03 +0100, Ralf Hildebrandt wrote:
> >From my log:
> 
> Dec 29 16:43:58 postamt dovecot: Dovecot v1.1.7 starting up
> Dec 29 16:43:59 postamt dovecot: Fatal: imap-login: epoll_create(): Too many open files

I finally figured this out. You need to
increase /proc/sys/fs/epoll/max_user_instances. I'll improve the error
message and add checks to Dovecot startup to warn if it's too low.

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