[Dovecot] "pipe() failed: Too many open files" - ??

[Hauke Fath]

Hi list,

after about a day of operation, dovecot 1.0alpha5 (NetBSD/i386 2.1) 
died on me with

Dec 14 10:53:52 bounce dovecot: pipe() failed: Too many open files
Dec 14 10:54:23 bounce last message repeated 279661 times
Dec 14 10:56:23 bounce last message repeated 1071807 times
Dec 14 10:56:59 bounce last message repeated 325386 times

-- any ideas on what to tune?

	hauke

-- 
/~\  The ASCII Ribbon Campaign                    Hauke Fath
\ /    No HTML/RTF in email	        Institut für Nachrichtentechnik
  X     No Word docs in email	                  TU Darmstadt
/ \  Respect for open standards              Ruf +49-6151-16-3281