Sv: Avoid duplicate emails in the sent folder

[André Rodier]

Thanks, Sebastian.

I just tried this, but it is working too well.

If I want to import emails from another Sent folder, using drag & drop
from my email client, the emails are deleted in the background.

This is why I am trying to use the duplicate filter.

Kind regards,
André Rodier

On Sun, 2021-04-04 at 13:04 +0200, Sebastian wrote:
> I have a sieve filter called "sent.sieve"
> 
> Where I just do this:
> discard;
> 
> Then in sieve settings:
> 
> plugin {
>   sieve_plugins = sieve_imapsieve sieve_extprograms
>   sieve_global_extensions = +vnd.dovecot.execute
>   sieve_execute_bin_dir = /usr/bin/
>   imapsieve_mailbox2_name = Sent
>   imapsieve_mailbox2_causes = APPEND
>   imapsieve_mailbox2_before = file:/etc/dovecot/sieve/sent.sieve
>   imapsieve_expunge_discarded=yes
> }
> 
> 
> And then in Exim4 SMTP server:
> 
> 
> sentfolder.filter:
> if $sender_address_domain is sebbe.eu then
> unseen save /var/mail/asterisk2/Sent
> endif
> 
> in exim4 config:
> system_filter = /etc/exim4/sentfolder.filter
> system_filter_file_transport = sentfolder
> 
> in transports of exim4.conf:
> 
> sentfolder:
>   debug_print = "T: Sentfolder for $local_part@$domain"
>   headers_add = Status: RO
>   headers_remove = x-dkim-signature
>   headers_remove = x-spf-signature
>   headers_remove = x-trusted-domain
>   headers_remove = keywords
>   headers_remove = x-priority
>   headers_remove = x-status
>   driver = appendfile
>   delivery_date_add
>   envelope_to_add
>   return_path_add
>   use_flock_lock = yes
>   use_fcntl_lock = no
>   use_lockfile = no
>   group = mail
>   mode = 0777
>   mode_fail_narrower = false
>   current_directory = /
> 
> 
> 
> that should solve it.
> 
> -----Ursprungligt meddelande-----
> Från: dovecot-bounces at dovecot.org <dovecot-bounces at dovecot.org> För
> André Rodier
> Skickat: den 4 april 2021 12:48
> Till: dovecot at dovecot.org
> Kopia: users at sogo.nu
> Ämne: Avoid duplicate emails in the sent folder
> 
> Hello,
> 
> I have a webmail program, that I cannot configure to not save sent
> emails in the Sent folder. My emails to the SOGo team don't seem to
> reach the mailing list anymore.
> 
> So, I have no other choice to think the problem differently, and
> _maybe_ use Dovecot to fix this issue. Moreover, I think this could
> be useful for other email clients.
> 
> First, I have tried to use Sieve, but no success so far:
> 
> ------
> imapsieve_mailbox4_name = *
>   imapsieve_mailbox4_from = Sent
>   imapsieve_mailbox4_causes = APPEND, COPY
>   imapsieve_mailbox4_after = file:/var/lib/dovecot/sieve/sent-
> checks.sieve
> ------
> 
> And this sieve script:
> 
> ------
> Message-ID header.
> require [
>   "variables",
>   "environment",
>   "duplicate",
>   "imapsieve"
> ];
> 
> […]
> 
> if duplicate :seconds 10 {
>    discard;
> }
> ------
> 
> Otherwise, can I configure dovecot in a certain way, for instance
> create a virtual Sent folder. This would not save the email when
> appended, but still returns the list of sent emails ?
> 
> But this is not working. Any idea?
> 
> Thanks for your help!
> 
> André
> 
>