I have a lot of rules in my Sieve script. Sometimes an email message
ends up in the wrong folder, due to a problem with one of the rules.
However, this is very difficult to debug, because I have no idea which
rule matched the email.
A log file might be helpful, but that wouldn't be readable without shell
access to the mail server. This is not a solution that would work for
everyday users, who configure their rules via a web page UI.
What would be great would be for the Sieve interpreter to append a
custom header to each email message after it gets processed. This
header would record which Sieve rules matched the email.
Does this feature exist already? Or is there a way to accomplish it via
the Dovecot server configuration? Thanks!
