How to add X-Bogosity line in qmail

[Todd Underwood]

paulo, all,

On Fri, 7 Mar 2003, Paulo Jan wrote:

> 	I'm using qmail and I want to set up bogofilter on a per-user basis, 
> calling it from the .qmail (dot-qmail) file. What I don't know is how to 
> make bogofilter add the "X-Bogosity" line in each mail that it 
> processes; I've tried with the "-p" switch, but it doesn't seem to work.
> 	I'm calling bogofilter using this .qmail file:
> 
> 	|condredirect [local address for spam] /usr/bin/bogofilter -p
> 	./Maildir/

this doesn't do what you think it does. :-)

each line in a .qmail file is processed *independently*.  that means that 
whatever modification to the message made by running bogofilter in -p mode 
in the first line are ignored by the second line.  in other words, 
"./Maildir/" is given its own, unmodified copy of the messge being 
delivered.

there are three basic ways to do what you want:

1) deliver to a script.  instead of just using condredirect, deliver to a 
script that modifies the message, parses the header and then either 
completes the delivery or re-injects the message based on the results.

2) use something like procmail that has these kinds of properties 
(procmail has historically been a security disaster, so i would stay away 
from it if possibly--consider maildrop).

3) do something creative with condredirect.  basically, never deliver 
anything out of your .qmail file directly.  always deliver to an alias.  
take advantage of the -e -p combination in bogofilter to do a second 
delivery if the first doesn't match.  basically:

| condredirect [local address for spam] /usr/bin/bogofilter -f -p
| condredirect [local address for nonspam] /usr/bin/bogofilter -f -e -p
./Maildir/

in this case the final ./Maildir/ should never be reached, and every 
message is re-injected to a new address.  this means two local deliveries 
for every message (rather than two local deliveries per spam only), but 
local delivery bandwidth is *almost* *never* the problem for qmail 
installations.

warning:  this is just typed in, not tested.

for more info 'man dot-qmail'

> 	I've searched in the qmail mailing list archives, but they don't have 
> further suggestions, and I couldn't search this list's archives because 
> I don't know where they are <g>.

me, neither.  i could only find archives that weren't being updated.

folx:  why don't you have archives set up for this list over on 
sourceforge?

t.


-- 

todd underwood, sr. vp & cto
oso grande technologies, inc.
todd at osogrande.com

"The people never give up their liberties but under some delusion."
  	    --Edmund Burke, Speech at County Meeting of Bucks, 1784.