Consulting djbware Publications


SPAMCONTROL is a qmail extension. Though mainly used to filter and control unsolicited commercial E-Mails (UCE/SPAM), since release 2 it includes substantial ESMTP protocol enhancements for qmail.

Features of SPAMCONTROL 2.7

Enhancements for qmail-smtpd

Enhancements for qmail-remote

Enhancements for qmail-pop3d

Enhancements for qmail-queue

Enhancements for qmail-send:

External enhancements:



Available are the following add-ons:

UCSPI-SSL Dependencies

qmail-smtpd as well as now qmail-remote will use my version of Superscripts' UCSPI-SSL libraries. Thus, UCSPI-SSL has to be installed before.

Note: In order to succeed with X.509 client certificate relaying, ucspi-ssl version ≥ 0.94 is required (providing option '-m').


SPAMCONTROL is suited for Internet Mail Gateway using Qmail, not for an end-user trying to get rid of Spam E-Mails.


It is important to have a good understanding of the pros'n'cons using SPAMCONTROL. Please consult the