I use linux magic; easy to integrate with qmail, works great; I had the same issue your having. On my MX I am using QMAIL+SPAMASSASIN+CLAMAV+linuxmagic
http://www.linuxmagic.com/opensource/magicmail/magic-smtpd/ > -----Original Message----- > From: Ajay Nawani [mailto:[EMAIL PROTECTED] > Sent: Friday, August 25, 2006 11:18 PM > To: [EMAIL PROTECTED] Org > Subject: SPAM Control and qmail-ldap proxy. > > Dear Experts, > > Request you all to help me on below: > > My Setup: > > Incoming MX Server: Redhat Linux, Qmail and mail getting forwarded to > MailStore Server (POP3): Solaris, Qmail-LDAP, Courier-IMAP. > Outgoing SMTP: Qmail. > > Problem: > > 1. I'm looking for a solution which can directly drop smtp session at MX > Server if user is not exist. Means a Qmail-ldap proxy kind of thing. > 2. Proper Rate Limit and Spam solution. I get almost 50k mails and out of > that 75% are spam. > > It will be great if anyone can help me out on above. > > Thanks in advance! > > Byebye > > Ajay Nawani