<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On 26/07/2005, at 10:15 PM, preissler thomas wrote:</DIV><BLOCKQUOTE type="cite"><BLOCKQUOTE type="cite"><DIV><BR></DIV><DIV>Also any messages with the headers of</DIV><DIV> Precedence: bulk</DIV><DIV>or</DIV><DIV> Precedence: list</DIV> <BR></BLOCKQUOTE><DIV><BR></DIV><DIV>Which standard/RFC?</DIV><DIV><BR></DIV></BLOCKQUOTE></DIV><DIV><FONT class="Apple-style-span" color="#0000DD"><BR class="khtml-block-placeholder"></FONT></DIV>Most major mailing list managers set them by default (including mailman on the nagios users list). They are not, that I'm aware, defined as part of a standard and are not in RFC822 or RFC1123, but a the end of the day they are used a lot.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>Sendmail itself uses these headers to do message prioritization, though as with a lot of sendmail's internals, this doesn't make it a good thing ;-)</DIV><DIV><BR class="khtml-block-placeholder"><DIV>The venerable vacation program was my first exposure to them, google shows a LOT of other programs now support their use.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>If you want to prevent your auto-responder from replying to mail it shouldn't, you need to use both of the tips presented in this thread. If you only choose to ignore mail that is not directly addressed to you, you may still fall foul of certain mailing list managers, promotional mails, etc.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>If you only use the Precedence method, you're relying on the sender setting something which isn't required (though most lists etc do).</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Are there better ways of doing this in the modern world? Sure! Can we implement one of them before this guy goes on holiday? Doubt it ;-)</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>greeno</DIV><DIV><DIV><DIV> <DIV>-- </DIV><DIV>Tony Green <<A href="mailto:tgreen@bandcamp.tv">tgreen@bandcamp.tv</A>></DIV> </DIV><BR></DIV></DIV></DIV></BODY></HTML>