On 27 Oct 2011, at 18:58 , Komal Tagdiwala (ktagdiwa) wrote:
Requirement: I need to devise a solution where a procmail script can
dynamically determine the final destination mailbox by querying a database
for a particular keyword to get the corresponding mailbox.
Approach I have in mind:
Based on my knowledge of procmail so far, I envision the following steps but
wanted some expert opinion on finding the right approach.
1. Use a database to maintain a key/value pair type information for a keyword
and a corresponding mailbox name. This information may be maintained manually
or using a custom application (outside of procmail).
2. Write a Perl script which takes an input parameter from procmail (I have
not done this before but I believe procmail can call a Perl script and just
pass an argument in the call).
If it is simply a matter of key/value pair, then it is much easier to use grep.
# I think Sean wrote this, essentially.
:0 h
CLEANFROM=|formail -IReply-To: -rtzxTo:
WHITELIST=$HOME/.friends
ISLISTED=`grep -i "^$CLEANFROM " $WHITELIST`
:0
* ISLISTED ?? ^[^ ]+[ ]+\/[^ ]+
$MATCH
.friends
email1(_at_)example(_dot_)com Friends
email2(_at_)example(_dot_)com Mom
email3(_at_)example(_dot_)com Bob
email4(_at_)example(_dot_)com Friends
3. The Perl script performs the actual query to database for a given keyword
to find the corresponding mailbox name.
If you need to query an actual database, then yes you will need an external
script to do it.
4. The script then returns the mailbox name to the procmail script/recipe
that invoked the Perl script.
That won’t work, the procmail recipe has to either wait for success, or assume
success. This will be the hangup.
If yes, are there any conditions that I missed in my approach that I need to
be mindful of before beginning research and development for this solution
using this approach?
The biggest issue is that your procmail deliveries will come to a complete stop
while your query script runs. This might be a critical flaw, a minor annoyance,
or of no importance at all.
--
The only way of discovering the limits of the possible is to venture a
little way past them into the impossible.
____________________________________________________________
procmail mailing list Procmail homepage: http://www.procmail.org/
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)de
http://mailman.rwth-aachen.de/mailman/listinfo/procmail