Originally Posted by falko
Postfix receives a mail, pipes it through procmail which then invokes SpamAssassin, ClamAV, etc. and finally puts it into Maildir/mbox from where you fetch it with your email client which connects to your POP3/IMAP server.
Ah, that sonds very easy
Is it right, that in this way the emails are scaned for spam and virusses at the end of the tranzport prozess and with amavis it would be scaned at the beginning of the tranzport whith the effect, if an unwanted email is comming and adressed form more than one address the email with amavis would be scaned only once for all otherwise with procmail every it means more mails are need to be scaned?