X-Git-Url: https://git.exim.org/exim-website.git/blobdiff_plain/6bc094771cb3ac2e80fb8669432dde5cf3740c8d..8e4b09729f6a0cefe6c78bb38da734d11aa588ad:/config.samples/F001 diff --git a/config.samples/F001 b/config.samples/F001 deleted file mode 100644 index fd21954..0000000 --- a/config.samples/F001 +++ /dev/null @@ -1,35 +0,0 @@ -From: Ephraim Silverberg -Date: Tue, 17 Feb 1998 12:55:55 +0200 - -We're using Exim 1.82 and have written a message filter to intercept spam -messages that RBL doesn't catch. Since we have met with reasonable success -since installing (and refining) the filter -- 566 genuine spam messages -intercepted during a time period where there were 67 RBL rejections -- I -thought that the rest of the list may be interested in reviewing our filter -as a starting point for their own system message filter. - -There are a number of caveats, however: - -1. The suspected spam is not automatically rejected as RBL hosts are, but - is saved to a folder that should be read/writable by the mail - administrators. The reason for this is that the filter catches also - some legitimate mail and these messages should be bounced to their - originally intended recipient(s) (ala X-Envelope-To:) and the filter - refined and/or the databases (described below) updated. - -2. My filter traps blank/non-existent To: lines as well as To: lines - contained in From: lines, but firsts exempts the following categories - from this check: mailing lists, local mail, mail originating in the - country (e.g. in our case *.il) and mail coming from autosupport servers. - -Beyond implicit checks, it uses four DBM databases: two that exempt the -message from any spam (beyond RBL) checks (software servers and strange mailing -lists need to be here) -- one based on $sender_address and the other on -$header_to: lines -- and, conversely, two databases for known spammers that -have valid mail headers that aren't caught by implicit checks. All entries -in these databases are lowercase so that we don't need two lines for -'friend@public.com' and 'Friend@Public.com'. - -The sample filter package is at ftp://ftp.cs.huji.ac.il/pub/exim/spam_filter/ - -Comments and suggestions are welcome.