introducing mopher, the mail gopher
2013-10-03 by Manuel Badzong
Hi again, since I mentioned mopher yesterday I guess it makes sense to forward the whole announcement, just in case more people are interested. In a nutshell: mopher is a milter-greylist inspired milter. It borrows most features and adds several new ones. Also it is very easy to extend the language and/or functionality through loadable modules that can be created with little effort. You can find many more details below. Thanks, Manuel ----- Forwarded message from Manuel Badzong <manuel@...> ----- Date: Fri, 14 Jun 2013 08:50:42 +0200
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From: Manuel Badzong <manuel@...> To: postfix-users@... Subject: introducing mopher, the mail gopher Hi, I would like to introduce mail gopher, a new all-in-one, MIT-licensed mail filter. Mopher is designed to be lightweight, modular and extensible, has several unique features and uses a very flexible and customizable configuration syntax that is very similar to the common firewall rule-lists some of us are already familiar with. Mopher can: + tarpit hosts + greylist hosts + greylist based on sender/recipient tuples + greylist based on sender-domain/recipient tuples + auto-whitelist hosts + auto-whitelist based on sender/recipient tuples + auto-whitelist based on sender-domain/recipient tuples + query black- and whitelists + query for SPF records + speak with spamassassin (through spamd) + reject during any protocol stage + act on body-size + count connections by hosts + count failed/successful delivery attempts by hosts + inject headers with all available information + log all available information (in a format of choice) + archive mails Mopher has: + a db-independent data backend + dynamically loadable modules + extensible syntax (by modules) + well structured default logging Mopher supports: + most libmilter features + Berkeley DB + MySQL + libspf2 + PSL (by Mozilla, see http://publicsuffix.org/) Mopher compiles and runs on: + GNU/Linux + NetBSD + FreeBSD Mopher runs on a couple of production servers, I ran the daemon (mopherd) extensively through valgrind and tested it on several occasions with smtp-source. Due to its modular design, package maintainers can split up a large build into several packages and therefore avoid unwanted dependencies. A pkgsrc-package already exists (see pkgsrc-wip) and I'll probably create a Debian-/RPM-package if nobody else does it in the meantime. Mopher ist extensible, hence there are several things that could be added to mopher in the near future: + legacy BDB support + SQLite support + PostgreSQL support + NoSQL archiving support (any backend possible) + DCC support + DKIM verification support + ... Mopher is hosted on GitHub, has a Mailing-List (with some useful configuration examples) and could some day also get a Wiki: + https://github.com/badzong/mopher + https://groups.google.com/group/mopher Thank you all very much for reading and I hope some of you will give it a shot. Cheers, Manuel P.S. Feedback is always welcome; either public or private. ----- End forwarded message -----