Howto do sieve filters

This seems to be incredibly hard to find... And there don't seem to be any tools integrated with
email clients (ximian are you listening???)

See http://www.cyrusoft.com/sieve/maro-sieve-script-001.txt
See http://ftp.at.linuxfromscratch.org/infosys/mail/cyrus-mail/draft-showalter-sieve-vacation-01.txt

Log into server as user you want to apply the vacation message to

$ mkdir sieve-scripts
$ cd sieve-scripts

create sieve script

 require "vacation";

 if header :contains "from" "@somecompany.com.invalid" {
   vacation :days 10 :addresses ["phil_packer@somecompany.com.invalid", "philp@layer3.co.uk.invalid"]
   "I'm away until the 28th August. Please contact Somecompany's Contact for where to go with
    any problems that won't wait untill then.

    Regards

    Phil Packer";
 } else {
   vacation :days 10 :addresses ["phil_packer@fluffcat.co.uk.invalid", "philp@layer3.co.uk.invalid"]
   "I'm away until the 28th August. Please contact Viv Gregory (vivg@layer3.co.uk.invalid for
    any problems that won't wait untill then.

    Regards

    Phil Packer";
}


$ sieveshell localhost
Please enter your password: *****
> help
> put vacation.sieve
> list
vacation.sieve
>