You can find it at
Recommended http://www.shupp.org/ with the qmail-toaster-0.50 patch Original Patch at http://www.interazioni.it/qmail/#qmail-smtpd
Please take note: If you use TLS you will need an additional patch to fix an early close problem. The patch is listed on Tonix's page, the Original Patch link.
Thanks again Tonix!
Regards,
Rick