pflogsumm has its own installation task.

defaults/main.yml

@@ -7,12 +7,10 @@ postfix_relay_rh_pkgs:
   - cyrus-sasl-lib
   - cyrus-sasl-plain
   - cyrus-sasl-md5
-  - postfix-perl-scripts
 
 postfix_relay_deb_pkgs:
   - postfix
   - libsasl2-2
-  - pflogsumm
 
 #############################################################################
 # Set them to true when you want configure your machine to send email to a relay

tasks/postfix_pflogsumm.yml

@@ -1,16 +1,35 @@
 ---
-- name: Configure pflogsumm
+- name: Set the environment for pflogsumm and install the package
   block:
   - name: Set the postfix logfile path in EL distributions
     set_fact:
       postfix_logfile: /var/log/maillog
     when: ansible_distribution_file_variety == "RedHat"
 
+  - name: Install the postfix-perl-scripts package on EL
+    ansible.builtin.yum:
+      pkg: postfix-perl-scripts
+      state: present
+    when: ansible_distribution_file_variety == "RedHat"
+
   - name: Set the postfix logfile path in deb distributions
     set_fact:
       postfix_logfile: /var/log/mail.log
     when: ansible_distribution_file_variety == "Debian"
 
+  - name: Install the pflogsumm package on deb
+    ansible.builtin.apt:
+      pkg: pflogsumm
+      state: present
+      cache_valid_time: 1800
+    when: ansible_distribution_file_variety == "Debian"
+
+
+  when: postfix_pflogsumm_reports
+  tags: [ 'postfix', 'postfix_pflogsumm' ]
+
+- name: Configure pflogsumm
+  block:
   - name: Install the pflogsumm script
     ansible.builtin.template:
       src: pflogsumm_report.sh.j2