Assistance Required with System Filter Saving Spam to User Maildir

Son Do

• August 14, 2025 11:42

I am trying to configure my system filter (/etc/cpanel_exim_system_filter) to save spam emails into the user’s .spam folder using the following filter:

if "${if def:header_X-Spam-Subject: {there}}" is there
then
    headers remove Subject
    headers add "Subject: $rh_X-Spam-Subject:"
    headers remove X-Spam-Subject
    save "/home/${lookup{$domain}lsearch{/etc/trueuserdomains_readable}}/mail/$domain/$local_part/.spam/"
endif

However, when checking /var/log/exim_mainlog, I see:

1umW0g-0000000BAvN-3Y48 == /home//mail//.spam/ <system-filter> T=custom_spam_filter

It seems that $domain and $local_part are not being expanded at all.

I am using custom_spam_filter defined in TRANSPORTSTART section of Exim:

custom_spam_filter:
  driver = appendfile
  delivery_date_add
  envelope_to_add
  return_path_add
  group = cpaneleximfilter
  user = cpaneleximfilter
  mode = 0660
  maildir_format = true
  create_directory = true

Could you please explain why the variables are not expanding in this context, and how I can properly save spam into the correct user mailbox path using a system filter?

• 

  cPRex Jurassic Moderator

  • August 18, 2025 13:50

  Hey there!  I do remember that users in Discord helped out with this as I'm not able to offer custom Exim filter work through the Forums.  

  0

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