Set domains for which amavis feels responsible.

roles/mail/templates/amavis/conf.d/50-user.j2

@@ -27,7 +27,11 @@ $spam_quarantine_to = undef;
 
 $X_HEADER_LINE = "$myproduct_name at $mydomain";
 
-# todo (mrks): determine local addresses
+@local_domains_acl = ("{{ mail_domain }}"
+{%- for domain in mail_domains %}
+, "{{ domain }}"
+{%- endfor %}
+);
 
 #------------ Do not modify anything below this line -------------
 1;  # ensure a defined return