Therefore I wrote a little perl script called "nettoie_mail.pl" that does it for me. You can get it here. You can lauch that script from anywhere, but the recommended way is to copy it to /usr/local/bin (with the terminal). As this script should be lauched on a regular basis, it should be included in the /etc/crontab file or in the /etc/daily.local file. For example, my choice is crontab:
5 2,13 * * * root /usr/local/bin/nettoie_mail.plHope this helps.
[Editor's note: I haven't tried this script myself, but I looked at the source and it doesn't appear there's anything malicious going on.]

