Automatically delete emails to specific recipients

Peter

Hey guys,
I have a catchall mailbox and some specific recipients are receiving a lot of spam on a daily basis (usually 30-50 emails). Example: I am using a mailbox emails@mydomain.com and the email address johnsmith@mydomain.com spam emails.
Based on other questions I have added a global sieve prefilter:

# global_sieve_before script
# global_sieve_before -> user sieve_before (mailcow UI) -> user sieve_after (mailcow UI) -> global_sieve_after

if address :is "to" "johnsmith@mydomain.com" {
  discard;
  stop;
}

However, these spam emails still land in quarantine. If it says sent to junk, it won’t show up there as they have already been deleted but I still need to handle the quarantine notifications. Is there anything I could do to prevent emails being sent to quarantine and discard them right away?
Thanks in advance!

esackbauer

Peter deleted but I still need to handle the quarantine notifications.

You can disable quarantine notification in mailbox settings.
Also you can tune the spam settings for your catchall mailbox (if you logon in mailcow UI with that user), you can reduce the threshold for not accepting spam mails

ETNyx

Hello, you can try Blacklist. Blacklisted email addresses is always classify as spam and rejected. Rejected mail will not be copied to quarantine.

Peter

ETNyx Thanks for the tip! As far as I understand blacklisting only works for senders. The spam emails are always coming from different senders, but are going to the same email address (maybe its on some big email list that a lot of spammers use).

Peter

esackbauer Was thinking about that too, but I would still like to receive quarantine notifications for all other emails. Most of the emails already get rejected, but still show up in my quarantine feed.

esackbauer

I guess that is the trade off you have to live with when using a catchall address. Thats the reason I never use one.