change check for cmd

tasks/configure.yml

@@ -12,12 +12,6 @@
   register: where_result
   when: which_result.stdout == ""
 
-- name: Fail if opendkim-genkey is not found
-  fail:
-  when:
-    - which_result.stdout == ""
-    - where_result.stdout == ""
-
 - name: Set command for opendkim-genkey (using which)
   set_fact:
     opendkim_genkey_cmd: "{{ which_result.stdout }}"
@@ -28,6 +22,10 @@
     opendkim_genkey_cmd: "{{ where_result.stdout }}"
   when: where_result.stdout != ''
 
+- name: Fail if opendkim-genkey is not found
+  fail:
+  when: opendkim_genkey_cmd is not defined
+
 - name: Generate DKIM keys
   shell: "{{opendkim_genkey_cmd }} -D /etc/dkimkeys --domain={{ item }} --selector={{ item }}"
   args: