On Thursday, November 06, 2003 1:04 PM
Au Yong Tien Chee <[EMAIL PROTECTED]> wrote:
>> Anyway, I did the PHP script due to not wanting to mess up the exim =
>> config.
You can safely test a new exim config with the -C option.
>> Is it possible for me to setup the config elsewhere (like a Exim
>> filter .forward?) coz I really don't want to mess up the main config
>> file. = Please advise.
>> Additionally, I didn't want to send back a reply to the non-valid
>> users, for the fear of spam mails...
In fact, you're not sending back a reply, but tell exim to output an
error message during the existing SMTP session and then close the
connection to the remote server. You must give any text, and giving an
explanatory message will help your customers when they use another email
address not in your database, for instance. If you omit the proposed
message, a default would be used saying something similar, but not
mentioning OTRS of course.
Most likely spammers will try to send their messages over and over again
until some sunny day your address vanishes from their lists due to
subsequent transmission failures. But don't bother if they do not give
up (perhaps they don't get to know it): You do not waste a big amount of
resources using this solution, because you (drums!) do not even receive
the message itself! Good dog exim rejects the SMTP session after
determining the faulty sender/recepient pair, the DATA part, ie. the
mail's real contents were still to come.
Using exim's ACL configuration is currently the only way to prevent
unwanted messages from even being received, thus putting a short end on
the line ;) Takes a lot of load from a heavy used server, I promise.
If you want to use exim's filters, you could try this:
# Exim filter
if ${lookup mysql {select email from customer_user where \
email='${quote_mysql:$sender_address}{"VALID"}} \
does not match "VALID" then seen finish endif
As I'm not using filter files at all I'm not sure if MySQL lookups are
permitted in them, but it's nothing more than a string expansion, which
were possible in any filter file. If the above doesn't work as a user's
filter, it should at least as a system filter.
hth,
Robert Kehl
--
((otrs.de)) :: OTRS GmbH :: Norsk-Data-Str. 1 :: 61352 Bad Homburg
http://www.otrs.de/ :: Tel. +49 (0)6172 4832388
_______________________________________________
OTRS mailing list: otrs - Webpage: http://otrs.org/
Archive: http://lists.otrs.org/pipermail/otrs
To unsubscribe: http://lists.otrs.org/cgi-bin/listinfo/otrs
Support oder Consulting f�r Ihr OTRS System?
=> http://www.otrs.de/
