On 06.08.2008 11:11, Thilo Bangert wrote:
> "Robin H. Johnson" <robbat2@g.o> said:
>> Please do NOT use out-of-office, vacation or any other auto-responders
>> on the lists. It's bad list etiquette.
> 
> decent vacation mail software ignores mail marked with a 'Precedence: 
> bulk' header, as mailing list mail usually is (including mails sent by 
> gentoo lists)...
> 
> I wish somebody would finally write up a RFC for this.

They already did:
http://tools.ietf.org/html/rfc3834

Eray