The idea of spam throttling came about after would-be spammers were easily circumventing (classic) tarpitting. A reasonable recipient limit in tarpitting must not adversely affect acceptable mail usage, so spam clients typically create multiple SMTP conne
What we'd like to do is allow mail relaying from a selected group of IP addresses only. If you've just been reading the qmail newbie's guide to relaying, you know that we do this be setting the environment variable RELAYCLIENT in qmail-smtpd's environment
I have set up a particular email discussion list to deal with the following issues: * SPAMCONTROL: release announcements, additional usage information, forthcoming developments * QMVC: release announcements, usage, additional templates * NEWANALYSE: relea
This is an SPF implementation for qmail. SPF is something like a DNS based "reverse MX" system to designate permitted senders for mails depending on the domain name. The goal is to disallow sender address forgery.
Life with qmail is aimed at everyone interested in running qmail, from the rank amateur (newbie) who just installed Linux on a spare PC all the way up to the experienced system administrator or mail administrator. If you find it lacking or unclear, please
Given DJB's claims about qmail security, observing the behavior of some of his followers, their denying qmail bugs and calling people who name qmail bugs "trolls", I feel obliged to document a collection of warnings about qmail bugs, problems, with soluti
Qmail Toaster has many interesting features. Besides supporting the POP3, SMTP, and IMAP protocols, it supports the more secure POP3-SSL and IMAP-SSL. It can provide SMTP roaming for remote users using SMTP-AUTH, POP3-AUTH, and IMAP-AUTH. Qmail Toaster ha