On 01 February 2002, Paul Walsh said:
> This set me thinking and the solution I'm trying to come up with uses a
> modified condition in the director which should only succeed if the received
> protocol isn't spam_checked AND the local part can be looked up in a file:
>
> spam_to_check:
> driver = smartuser
> transport = spam_scan
> condition = ${if and { {!eq {$received_protocol} {spam_checked} }\
> { eq {${lookup {$local_part} lsearch {/usr/exim/tables/SA_users} {1}}} {1}
> }\
>
> I'm obviously going wrong somwhere because I get the following error:
Ugh, don't you just hate trying to debug those hairy expansions? Oh,
for temporary variables!
Anyways, I recently went through a similar exercise. The director I
crafted to decide if someone's mail gets piped through SpamAssassin is a
little more complicated, because my /etc/exim/spamcheck_users
(equivalent to your /usr/exim/tables/SA_users) also acts like an alias
file: if someone is listed there, pipe their mail through SA, and then
deliver it to the address in the file. Here it is:
# Filter through SpamAssassin, but only if the local_part is mentioned
# in /etc/exim/spamcheck_users (an alias-like file).
spamcheck_user:
driver = smartuser
transport = spamcheck
# Translated, this reads:
# if !(defined X-Spam-Flag) and
# !($received_protocol eq "spamcheck") then
# run this director
condition = "${if and { {!def:h_X-Spam-Flag:} \
{!eq {$received_protocol}{spamcheck}} } {1}{0}}"
local_parts = lsearch;/etc/exim/spamcheck_users
new_address = ${lookup{$local_part} lsearch \
{/etc/exim/spamcheck_users} {$value}}
In the painful hours it took me to perfect this, I leaned about a very
valuable tool: "exim -be". Run that, and then build up your expansion
string a little bit at at time. Sooner or later, you'll find the
problem.
Hope that helps --
Greg
--
Greg Ward - software developer gward@???
MEMS Exchange http://www.mems-exchange.org
