Hi all

Sorry about the cross-post. I tried this on exim-users with no response so I
thought I would try my luck here.

Really simply: does anyone know if its possible to do LDAP lookups directly in a
system_filter or similar (such as a central_filter using the redirect
transport)? Basically, I want to lookup the OU for a particular mail user and
then perform selective filtering based on what 'organizational unit' that
particular mail user is in, system wide. This can be done either within the
filter script, or declared outside of the script in exim.conf and then 'used' by
the script logic.

For example, I've setup a system-wide central filter as follows:

>central_filter:
> driver = redirect
> domains = +local_domains
> file = /etc/exim/filter1
> no_verify
> user = exim
> group = exim
> allow_filter
> allow_freeze

Then I want to have something like the following inside /etc/exim/filter1

>group = ${lookup ldapm
{ldap://localhost:389/ou=people,dc=testdomain,dc=com?ou?(mail=${local_­part})}{$\
value}
>
>if $group is "marketing" then save /dev/null endif

Does anyone know how to do this or if its possible? I found this post:
http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20030310/msg00292.html
but no further information on the matter.

Perhaps I can lookup the group information outside of the central_filter, then
pass that information to the filtering script?

Also, I understand theres some caveats between system_filters and
central_filters with regards to multiple recipients which is why I chose to use
the redirect/central_filter model. Are there any problems with this approach?

-a



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