BIG PROBLEM: Need help with production box

[Curtis Robinson]

Hello,

I need major assistance.  We have a dual cpu w/ 2GB of RAM.  Recently, lmtpd and imapd processes have been eating up all available memory to the point the machine stops responding.  I have try to reconstruct every mailbox and fix the mailbox database, but nothing has fixed it.  Some of the ctl_ commands fail too by eating up memory.  None of the users have very large mailboxes either.  Any help would be great.  Thank you.

Setup:
6600 Accounts
Redhat 9.0
Cyrus IMAPD 2.1.16
Cyrus SASL 2.1.10
OpenLDAP 2.1.23
Sendmail

cyrus.conf:
# standard standalone server implementation

START {
  # do not delete this entry!
  recover       cmd="ctl_cyrusdb -r"

  # this is only necessary if using idled for IMAP IDLE
#  idled                cmd="idled"
}

# UNIX sockets start with a slash and are put into /var/imap/sockets
SERVICES {
  # add or remove based on preferences
  imap          cmd="imapd" listen="imap" prefork=5 maxchild=120
  imaps         cmd="imapd -s" listen="imaps" prefork=1 maxchild=120
  pop3          cmd="pop3d" listen="pop3" prefork=3 maxchild=60
  pop3s         cmd="pop3d -s" listen="pop3s" prefork=1 maxchild=60
  sieve         cmd="timsieved" listen="sieve" prefork=0

  # at least one LMTP is required for delivery
#  lmtp         cmd="lmtpd" listen="lmtp" prefork=0
  lmtpunix      cmd="lmtpd" listen="/var/imap/config/socket/lmtp" prefork=5 maxchild=8

  # this is only necessary if using notifications
#  notify       cmd="notifyd" listen="/var/mail/imap/socket/notify" proto="udp" prefork=1
}

EVENTS {
  # this is required
  checkpoint    cmd="ctl_cyrusdb -c" period=15

  # this is only necessary if using duplicate delivery suppression
  delprune      cmd="ctl_deliver -E 3" at=0400

  # this is only necessary if caching TLS sessions
  tlsprune      cmd="tls_prune" at=0400
}

imapd.conf:
configdirectory: /var/imap/config
servername: fit.edu
partition-default: /var/imap/data
admins: cyrusadm
sasl_pwcheck_method: saslauthd
tls_ca_file: <key>
tls_key_file: <key>
tls_cert_file: <key>
end of imapd.conf


---
Curtis Robinson
crobinso.at.it.fit.edu



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