Copy all mail for specific accounts via Exim

PROBLEM

I want to be able to copy all mail for a/some specific account/s via Exim.

ENVIRONMENT

• atmail mail server

CAUSE

Copy emails requirement.

RESOLUTION

1. Open and edit /var/lib/atmail/mailserver/roles/ss1ip/templates/exim/exim.conf.j2
2. Locate
   

   ###
   ### Start: main-cfg.j2 #############################################################
   ###
   
   daemon_smtp_ports = 25{% if exim_smtps_enable|int == 1 %}:465{% endif %}{% if exim_submission_enable|int == 1 %}:587{% endif %}
   
   local_interfaces = {{ exim_local_interfaces }}

3. Change to

   ###
   ### Start: main-cfg.j2 #############################################################
   ###
   
   ###
   ###<SYSTEM FILTER FOR SINGLE USERS EMAIL COPYING>
   ###
   system_filter = /etc/exim/atmail.filter
   system_filter_user = atmail
   system_filter_group = atmail
   ###
   ###</SYSTEM FILTER FOR SINGLE USERS EMAIL COPYING>
   ###
   
   daemon_smtp_ports = 25{% if exim_smtps_enable|int == 1 %}:465{% endif %}{% if exim_submission_enable|int == 1 %}:587{% endif %}
   
   local_interfaces = {{ exim_local_interfaces }}

4. Save changes and exit.
5. Create /etc/exim/atmail.filter
6. Edit /etc/exim/atmail.filter and add
   

   # don't want to get multiple copies
   if first_delivery
   and (("$h_to:, $h_cc:" contains "user1@domain.com")
   or ("$h_from:" contains "user1@domain.com"))
   then
   unseen deliver "copy@domain.com"
   endif    

7. Add new block for each account you want to archive.
   

   # don't want to get multiple copies
   if first_delivery
   and (("$h_to:, $h_cc:" contains "user1@domain.com")
   or ("$h_from:" contains "user1@domain.com"))
   then
   unseen deliver "copy@domain.com"
   endif     
            
   if first_delivery
   and (("$h_to:, $h_cc:" contains "user2@domain.com")
   or ("$h_from:" contains "user2@domain.com"))
   then
   unseen deliver "copy@domain.com"
   endif
   
   if first_delivery
   and (("$h_to:, $h_cc:" contains "user3@domain.com")
   or ("$h_from:" contains "user3@domain.com"))
   then
   unseen deliver "copy@domain.com"
   endif

8. Save changes and exit.
9. Go to webadmin > Services and press Publish config.
10. Restart exim services.
    systemctl restart exim
11. Copying will be now setup for the accounts specified.
12. Note, the maildir directory should be backed up via cron each month and automatically pruned of messages. Otherwise the performance can decrease if the directory contains a large number of messages.