qmail-queue-handlers macht Probleme

[Nordi]

MOD: Bitte CODE Tags nutzen. Danke!

Hallo,
seit einigen Tagen habe ich das Problem, das meine Logdateien immer wieder mehrere Gigabyte an Speicher benötigen. Vielleicht könnt Ihr mir helfen. Hier ein Auszug aus den Logdateien:

[B]syslog[/B]
Aug  7 01:06:15 meinserver syslogd 1.5.0#5ubuntu4: restart.
Aug  7 01:06:15 meinserver qmail-queue-handlers[13728]: Handlers Filter before-queue for qmail started ...
Aug  7 01:06:15 meinserver qmail-queue-handlers[13728]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail: 1312671975.984505 warning: trouble injecting bounce message, will try later
Aug  7 01:06:15 meinserver qmail-queue-handlers[13772]: Handlers Filter before-queue for qmail started ...
Aug  7 01:06:15 meinserver qmail-queue-handlers[13772]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail: 1312671975.986399 warning: trouble injecting bounce message, will try later
Aug  7 01:06:15 meinserver qmail-queue-handlers[13773]: Handlers Filter before-queue for qmail started ...
Aug  7 01:06:15 meinserver qmail-queue-handlers[13773]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail: 1312671975.988136 warning: trouble injecting bounce message, will try later

Und so weiter...

[B]mail.info[/B]
Aug  7 01:06:15 meinserver qmail-queue-handlers[13728]: Handlers Filter before-queue for qmail started ...
Aug  7 01:06:15 meinserver qmail-queue-handlers[13728]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail: 1312671975.984505 warning: trouble injecting bounce message, will try later
Aug  7 01:06:15 meinserver qmail-queue-handlers[13772]: Handlers Filter before-queue for qmail started ...
Aug  7 01:06:15 meinserver qmail-queue-handlers[13772]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail: 1312671975.986399 warning: trouble injecting bounce message, will try later
...

[B]mail.err[/B]
Aug  7 01:06:15 meinserver qmail-queue-handlers[13728]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail-queue-handlers[13772]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail-queue-handlers[13773]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail-queue-handlers[13774]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail-queue-handlers[13777]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail-queue-handlers[13778]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
Aug  7 01:06:15 meinserver qmail-queue-handlers[13779]: possibly qmail-smtpd exited by timeout, reset connection. ^I^I^I^ISee "http://pobox.com/~djb/docs/smtplf.html." for get more information.
...

Des Weiteren habe ich mit qmHandle folgende Daten bekommen:

root@meinserver:/var/qmail/bin# ./qmHandle -R
Total messages: 32132
Messages with local recipients: 0
Messages with remote recipients: 0
Messages with bounces: 0
Messages in preprocess: 0
root@ meinserver:/var/qmail/bin# ./qmHandle -L
Total messages: 32132
Messages with local recipients: 0
Messages with remote recipients: 0
Messages with bounces: 0
Messages in preprocess: 0

Den Hinweis auf die smtplf.html zuschauen habe ich natürlich gemacht und auch google gequält. Aber ich bin nicht fündig geworden. Ach ja, das Ganze läuft auf einem VirtualServer (Plesk) mit Ubuntu.
Vielen Dank schon einmal in Vorraus für Eure Antworten.
Gruß
Klaus