Amavisd-new is a high-performance interface between mailer (message transfer agent - MTA) and one or more content checkers: virus scanners, and/or [SpamAssasin]. It is written entirely in Perl, assuring high reliability, portability and maintainability. It talks to MTA via (E)SMTP or LMTP, or by using helper programs. Best with Postfix, works with Exim, sendmail/milter or with any MTA as a SMTP relay. \[http://www.ijs.si/software/amavisd/\] |
[MailScanner] now includes support for [SpamAssassin]. This is "a virus scanner for e-mail designed for use on e-mail gateways. It can also detect a large proportion of unsolicited commercial e-mail (spam) passing through it." \[http://www.sng.ecs.soton.ac.uk/mailscanner/\] |
Another option is to use a filtering SMTP proxy such as spampd. It is typically used to filter the mail between an external-facing MTA instance/relay, and an "internal" MTA instance. \[http://www.worlddesign.com/index.cfm/rd/mta/spampd.htm\] |
With Sendmail, Spamassassin can be called for every user by editing /etc/procmailrc . More details at http://www.stearns.org/doc/spamassassin-setup.current.html#sitewide
An alternative is to use the smtp-vilter high-performance content filter using the sendmail milter API which has a backend for Spamassassins spamd. More details at http://www.etc.msys.ch/software/smtp-vilter/
MIMEDefang, a sendmail milter written by Roaring Penguin Software, filters all e-mail messages sent via SMTP through a sendmail installation, blocking common mail virii, and now -- with the help of [SpamAssassin] -- spam. "You can use [SpamAssassin] to test for spam, and then all of the MIMEDefang goodies to reject, manipulate or otherwise mangle the message." \[http://www.roaringpenguin.com/mimedefang/\] |
spamass-milt \[http://savannah.gnu.org/projects/spamass-milt/\] is a sendmail milter by Georg C. F. Greve, which allows sendmail users to filter spam at the heart of the sendmail message pipeline. It also allows [SpamAssassin] to be used for UUCP sites. If you plan to use this, be sure to read Kevin [McGrail]'s walkthrough at Peregrine Hardware. \[http://www.peregrinehw.com/downloads/SpamAssassin/INSTALL-spamassmilter\]. |
BSM Development have released [MailCorral] and [SpamCorral] for use on UNIX and Linux systems, mail/spam filtering software using the sendmail milter interface. \[http://www.bsmdevelopment.com/\] |
The easiest way to integrate postfix and spamassassin is to use spamd. First, edit master.cf, find the smtp line and just add "-o content_filter=spamassassin" to the end of the line.
Then, go to the end of the file, and add this:
spamassassin unix - n n - - pipe user=nobody argv=/path/to/spamc -f -e /path/to/postfix/sendmail -oi -f ${sender} ${recipient}
Then, setup spamd to start with the system, and you are ready to go. If you wish to provide spamassassin preferences, change "user=nobody" to a valid system user, and add .spamassassin into their home directory.
Alternatively, a more complex scheme is to integrate it using Amavis, as described in IntegratedInPostfixWithAmavis.
Can be integrated via qmail-scanner, an add-on to qmail. Info available at http://qmail-scanner.sourceforge.net/
This is actually quite easy. SA is auto-detected when you install qmail-scanner, and uses the spamd/spamc combo if available. Here is my configure line (sans private data):
$ ./configure --spooldir /var/lib/qmailscan --qmaildir /var/qmail --bindir /var/qmail/bin \ --qmail-queue-binary /var/qmail/bin/qmail-queue --admin postmaster@example.com --domain example.com \ --notify none --local-domains example1.com,example3.com,some.other.domain.net --silent-viruses auto \ --lang de_DE --debug 1 --unzip 0 --add-dscr-hdrs 0 --archive 1 --redundant no --log-details \ --fix-mime 1 --scanners "verbose_spamassassin" --install 1 |
[SpamAssassin] can be integrated into \[http://www.exim.org/ Exim\] in three ways: |
As an \[http://duncanthrax.net/exiscan-acl/ Exiscan\]-extended ACL condition stack, Exim can reject spam after reading the body, but before Exim acknowledges acceptance of the email. \[http://www.debian.org/ Debian Linux\]'s exim4-daemon-heavy comes with the exiscan patch built in. You can discover its presence in your distro's exim binary directly with the command {{exim -bV}} or {{exim4 -bV}}; look for the phrase {{Contains exiscan-acl patch}}.
\\ |
As an Exim 4.x loadable module or local_scan.c replacement. \[http://marc.merlins.org/linux/exim/sa.html SA-Exim\] also allows [SpamAssassin] to reject spam before its accepted by your MTA. \\ |
As an \[http://dman13.dyndns.org/~dman/config_docs/exim-spamassassin/ Exim transport\]. \\ \\ |
There is a rudimentary HOWTO at \[http://forums.gentoo.org/viewtopic.php?t=28392 the Gentoo forums\] for integrating [SpamAssassin] and f-prot with Courier-MTA. |
SpamAssassin plugin for CommuniGate Pro 4.x
Installation and usage instructions can be found at
http://www.stalker.com/CGPSpamCatcher/#Integrate
ftp://ftp.vsu.ru/pub/apps/CGatePro/sa-cgp.c
ftp://ftp.vsu.ru/pub/apps/CGatePro/Mail-SpamAssassin-2.63-ai.diff (required)
Build:
AIX: cc_r sa-cgp.c libspamc.c utils.c -o sa-cgp
Solaris: cc -mt sa-cgp.c libspamc.c utils.c -o sa-cgp -lsocket -lnsl
[SpamAssassin] Filter (sa_filter.pl) is an \[http://www.xmailserver.org/ XMail\] filter send incoming email messages to [SpamAssassin] for spam filtering. |
sa_filter.pl calls spamc, the SpamAssassin client (spamc calls spamd) and passes the output of spamc back to XMail for delivery. Neither sa_filter.pl nor spamc will delete emails that are flagged as spam.
Please find the filter source code and documentation at \[http://www.drakeconsult.com/xmail/ Drake Consulting\] |