Sieve duplicates

[Stephan Bosch]

Ugh.. I remember several bugs related to this and your version is ancient. I suggest you try to upgrade.

On 20-12-2022 00:18, Ferenc wrote:
> Hi list,
>
> I’m trying this again from a different account because of lots of SPF warnings.
>
> I have Sieve scripts that duplicate e-mails. I don’t want that. My dovecot version is 2.3.4.1 (f79e8e7e4), Pigeonhole version 0.5.4 on Linux 5.4.189-2-pve x86_64 Debian 10.13.
>
> My scripts get called on an imap COPY action (imapsieve extension). The mail is fed to an external script (spam/ham training or retraining) via a pipe :copy action (vnd.dovecot.pipe extension). An header is added to keep track of what happened (editheader extension).
>
> I use "if header :contains” for my (simple) logic. If contains header X, do this, add header Y. If contains header Y, do that, add header X. I end each "if” part with “keep;" and “stop;” commands.
>
> Simple versions of the scripts, without the if-then construct, seem to work ok with imapsieve. As soon as I try to use if-then-else I find a duplicate of the processed e-mail; the original mail seems to be untouched, the duplicate appears to have been processed. With macos mail not all duplicates show up but with Roundcube webmail I can see them all.
>
> The scripts are like this:
>
> # without if-then
> require …
> pipe :copy …
> addheader …
> keep;
>
>
> # with if-then
> require …
>
> if header :contains
>    pipe :copy …
>    addheader …
>    keep;
>    stop;
>
> if not exists
>    pipe :copy …
>    addheader …
>    keep;
>    stop;
>
> keep;
>
>
> The scripts get called from “imapsieve_mailbox1_before” for example.
>
> Cheers,
> Ferenc