Channel Filter Problem

Question

I create this filter:
require "fileinto";
require "notify";
require "variables";
if allof(
header :contains ["To","Cc","Bcc","Resent-to","Resent-cc","Resent-bcc"] "[email protected]",
not header :contains ["From","Sender","Resent-from","Resent-sender","Return-path"] "test.com"
keep;
redirect "[email protected]";
#redirect "[email protected]";
keep;
[email protected] is a mailing list.
[email protected] is a single user.
If I redirect email to [email protected] work without problem.
If I redirect to [email protected] the users on [email protected] receive 10 email all equal.
Any Ideas ?
Bye Giovanni

Answer 1

Hi,
I don't see how this differs from your other sieve filter question...
The reason you are seeing duplicates for multiple channel based redirects is that a redirect changes the envelope rcpt address and there is no mechanism in your script to stop looping.
As channel based redirects requeues, you keep having the requeued email match again and again (since it is a channel based rule) and swap recipients back and forth between [email protected] and [email protected], a copy of the email being kept for the recipient each time. After 10 or so goes, the maximum received header check kicks in and holds the message from further processing.
As a user-level sieve (added to the account associated with [email protected]) you won't hit the same problem because once the envelope recipient changes the sieve-rule is no longer associated with the end-user and thus doesn't get triggered, hence no looping.
Regards,
Shane.