I've a setup that use Spamassassin to check for junkmail.And use the procmail to filter the mails.

now, I have create the .procmailrc file for each user in user's home directory to forward the junkmails to /dev/null to clear them.

But this method is quite a big problem when there are lots account in the server, I have to make lots copy in all users' home directory.

Is there a public setting in procmail for all users that it will filter all mails after spamassassin check the mails and I don't need to create .procmailrc file for each users?

SpamAssassin can be setup to operate site-wide instead of per user. Have a look at the docs at http://wiki.apache.org/spamassassin/UsingSiteWide, http://www.stearns.org/doc/spamassas....html#sitewide and http://wiki.apache.org/spamassassin/...deGeneralNotes for more info.