Fellows,

I have been on the receiving side for a while when it comes to take advantage of the good work that lots of you have been doing. The following is an attempt to start contributing, too. I hope it is useful for others. The maildroprc file is based on information I got from the Internet, including the emails in this list. Use it as you see fit.

I have 2 mail servers with the following major setup pieces: RedHat 9.0 postfix 2.0.16 courier-imap 2.1.1 maildrop 1.6.1 squirrelmail 1.4 spamassassin 2.63

Squirrelmail is a very good webmail. I am quite impressed with all the nice plugins including spamassassin and bayesspam. However I wanted to have spam filtering even for those customers who choose to use email clients such as evolution, mozilla, or Outlook Express. When I started trying to use the bayes filtering feature of spamassassin on the server I came across a few difficulties, which I believe I have overcome in a nice way. For instance I wanted an email identified as spam, or possible spam, to go to folders in the customers accounts labeled spam and assumedspam. This allows all the email to stay in the customers accounts, thus avoiding any conflict with the law. Moreover, no email is deleted and the customer has the opportunity to review it.

The most important part of the work was the "maildroprc" file. I am assuming that who ever wants to use the information that I am providing already has a woking email server. Here is the parts that I think will be essential for others to get the same setup:

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/ETC/POSTFIX/MASTER.CF (this is only the entry for maildrop) maildrop unix - n n - - pipe flags=DRhqu user=vmail:vmail argv=/usr/local/bin/maildrop -d ${recipient} -f ${sender}

--------------------------------------------------------------------------------------- /ETC/MAILDROPRC

VHOME="/home/vmail/vhosts" ACCOUNT=`echo $LOGNAME | cut -d@ -f1` USERDOMAIN=`echo $LOGNAME | cut -d@ -f2`

if ( $SIZE < 26144 ) { exception { xfilter "/usr/bin/spamc" } }

if (/^X-Spam-Flag: *NO/) { exception { to "$VHOME/$USERDOMAIN/$ACCOUNT/Maildir" cc "|/usr/bin/sa-learn --single --ham" } } else { if ( /^X-Spam-Level: *-----.*$/ ) { if( test -d $VHOME/$USERDOMAIN/$ACCOUNT/.Spam ) { `maildirmake -f Spam $VHOME/$USERDOMAIN/$ACCOUNT` `echo INBOX.Spam >> $VHOME/$USERDOMAIN/$ACCOUNT/courierimapsubscribed` }

exception { to "$VHOME/$USERDOMAIN/$ACCOUNT/.Spam" } cc "|/usr/bin/sa-learn --single --spam" }

if ( /^X-Spam-Level: *-.*$/ ) { `test -d $VHOME/$USERDOMAIN/$ACCOUNT/.AssumedSpam` if( $RETURNCODE == 1 ) { `maildirmake -f AssumedSpam $VHOME/$USERDOMAIN/$ACCOUNT` `echo INBOX.AssumedSpam >> $VHOME/$USERDOMAIN/$ACCOUNT/courierimapsubscribed` }

exception { to "$VHOME/$USERDOMAIN/$ACCOUNT/.AssumedSpam" } } }

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/ETC/MAIL/LOCAL.CF

required_hits 9 rewrite_subject 0 subject_tag [SPAM]

clear-headers add_header spam SPAM SPAM

# Enable the Bayes system use_bayes 1 report_safe 1 always_add_headers 1 bayes_auto_learn 1 add_header all Level _STARS(-)_ spam_level_stars 1 spam_level_char - bayes_min_ham_num 200 bayes_min_spam_num 200 bayes_auto_learn_threshold_nonspam 0.1 bayes_auto_learn_threshold_spam 12.0 bayes_path /etc/mail/spamassassin/bayes

# privileged settings allow_user_rules 0