On Sun, Apr 18, 2004 at 09:11:09PM -0400, [EMAIL PROTECTED] wrote: > But anyway, the "List-Id" header is guaranteed to be present and the same > for all messages delivered through this mailing list. So, one should filter > on that, and not anything else, to identify list mail.
This is a point worth taking note of. Filtering ONLY on list-id can fail. Often, a poster replies to both the list, and the original poster. In this case, the OP will normally receive two copies of the message: one from the list management software (with the expected List-Id header), and one which comes directly from the sender (which will NOT have the List-Id header). If you DON'T use procmail (or something else) to filter duplicate messages, you'll get two copies of the message. One will be "properly" filtered, and the other will not. If you DO use procmail to filter duplicates, you will only receive one copy of the message. You probably will first receive the message which comes directly from the sender, and thus it will not be filtered properly. This is the rule I use to filter all mail from the GNHLUG and BLU mailing lists into my "Linux" folder. It's not 100% perfect, but it fails (with false positives) only in extremely rare cases. :0 * (gnhlug|discuss)[EMAIL PROTECTED](gnhlug|blu) folders/Linux This matches on any header, any occurrence of the following: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] ...as well as a number of patters which are not official list addresses for either list, but which are very unlikely to occur anywhere else. Of course, if you're filtering only for gnhlug, you could pretty much eliminate false positives with this: * [EMAIL PROTECTED]|[EMAIL PROTECTED] I will also note for the record that the List-ID header for this list appears to have a small error... I think there's a '.' where the '@' should be. It may not be crucial, but if people expect to match on '[EMAIL PROTECTED]', it will fail. -- Derek D. Martin http://www.pizzashack.org/ GPG Key ID: 0xDFBEAD02 -=-=-=-=- This message is posted from an invalid address. Replying to it will result in undeliverable mail. Sorry for the inconvenience. Thank the spammers.
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