question

[dengyj]

hi: we have two mail severs use qmail(+freebsd) to send mail(ezmlm) but in this few days ,it often shutdown,down at Oct 19 09:21:26. show content in the  /var/run/message :     Oct 19 09:21:26 m3 /kernel: Out of mbuf clusters - increase maxusers! Oct 19 12:51:41 m3 /kernel: Copyright (c) 1992-1998 FreeBSD Inc. Oct 19 12:51:41 m3 /kernel: Copyright (c) 1982, 1986, 1989, 1991, 1993 Oct 19 12:51:41 m3 /kernel: The Regents of the University of California.  All rights reserved. Oct 19 12:51:41 m3 /kernel: Oct 19 12:51:41 m3 /kernel: FreeBSD 2.2.7-RELEASE #0: Sat Feb 19 19:45:57 CST 2000 Oct 19 12:51:41 m3 /kernel: [EMAIL PROTECTED]:/usr/src/sys/compile/MYKERNAL