> -----Original Message----- > From: Robert Sinton > Sent: Thursday, May 29, 2003 4:26 PM > > Could somebody please advise the best method of whitelisting > messages from a given mailing list? > > Users here are occasionally getting incoming mailing list > messages flagged because of their contents. I'd like to be able > to atomatically whitelist those messages to avoid this. [...] > I could of course just write custom regexp rules that matched the > mailing list addresses when found in the 'Sender:' header, and > give them whacking great negative scores, but it seems a bit > kludgy. Am I missing an obvious, more orthodox way of doing this?
First, keep in mind that a clever spammer might just fake a message header that looks like an e-mail list header, and bypass your spam filters. And then, there's the case where a spammer spams the list. Maybe best is to simply add a list score, and tune it along with all the rest until it does a suitable job of letting most of the list message through. Here are some heuristics for noting list membership: These headers will catch many of mailing lists (some lists will have than one of these fields asserted): List-Id: List-Info: List-Owner: List-Unsubscribe: Mailing-List: X-Mailing-List: X-Topica-Id: Precedence: List Most lists have a Sender: header field, but then so do a lot of spam messages. I've found that a fair number of the spamming lists often have a List-Unsubscribe: and an Errors-To: field, so perhaps those aren't such hot header fields to use for list detection either. At a minimum they'd have a lower weight. ------------------------------------------------------- This SF.net email is sponsored by: eBay Get office equipment for less on eBay! http://adfarm.mediaplex.com/ad/ck/711-11697-6916-5 _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
