Mailfromd README Copyright (C) 2005, 2006, 2007, 2008 Sergey Poznyakoff See the end of file for copying conditions. A Lluis Llach, per obrir els nous horitzons. * Introduction This file contains brief information about configuring, testing and running Mailfromd. It is *not* intended as a replacement for the documentation, it is provided as a brief reference only. The complete documentation for Mailfromd is available in doc/ subdirectory. To read it without installing the package run `info -f doc/mailfromd.info'. After the package is installed the documentation can be accessed running `info Mailfromd'. Invoking `info mailfromd' (with lower-case `m') will show you a concise description of the command line syntax (similar to a man-page style). Invoking `info mtasim' will bring you to a description of `mtasim', an MTA simulator for testing Mailfromd scripts. The online copy of the documentation in various formats is available at http://gray.gnu.org.ua/software/mailfromd/manual. * Overview Mailfromd is a general-purpose Sendmail filter. It implements an effective and easy-to-learn language that allows to write mail filters of arbitrary complexity. A reach set of built-in functions provides interfaces for sender address verification (a.k.a. `callout'), greylisting, SPF, Sieve, etc. Sender address verification, implemented by mailfromd allows you to block a sender address if it is not deliverable, thereby cutting off a large amount of spam. It is also useful to block mail for undeliverable recipients, for example on a mail relay host that does not have a list of all the valid recipient addresses. This prevents undeliverable junk mail from entering the queue, so that your MTA doesn't have to waste resources trying to send `MAILER-DAEMON' messages back. Greylisting allows to temporarily reject messages coming from suspicious addresses. If the mail is legitimate, this will make the originating server retry the delivery later, at which time the destination will accept it. If, however, the mail is a spam, it will probably never be retried, so the users will not be bothered by it. SPF, or the Sender Policy Framework, is an extension to SMTP protocol that allows to identify forged identities supplied with the `MAIL FROM' and `HELO' commands. The framework is defined in RFC 4408 (http://tools.ietf.org/html/rfc4408). Sieve is a powerful mail filtering language, defined in RFC 3028. Mailfromd provides a Sieve interface that makes it possible to extend its functionality with the tests supported by Sieve. The program runs as a daemon, communicating with Sendmail via Milter interface. * Building Please, refer to the node "Building" in the accompanying documentation. If you have GNU texinfo installed on your system, run info --node Building -f doc/mailfromd from the package root directory. The documentation in various formats is also available online, see http://puszcza.gnu.org.ua/software/mailfromd/manual. * Configuring and Running Please, see mailfromd documentation. * Bug reporting. Send bug reports to . * Copyright information: Copyright (C) 2005, 2006, 2007, 2008 Sergey Poznyakoff Permission is granted to anyone to make or distribute verbatim copies of this document as received, in any medium, provided that the copyright notice and this permission notice are preserved, thus giving the recipient permission to redistribute in turn. Permission is granted to distribute modified versions of this document, or of portions of it, under the above conditions, provided also that they carry prominent notices stating who last changed them. Local Variables: mode: outline paragraph-separate: "[ ]*$" version-control: never End: