diff --git a/roles/mailserver/tasks/configure_postfix.yml b/roles/mailserver/tasks/configure_postfix.yml
index a2418da..6e23eac 100644
--- a/roles/mailserver/tasks/configure_postfix.yml
+++ b/roles/mailserver/tasks/configure_postfix.yml
@@ -1,5 +1,5 @@
 - name: mailserver | postfix | configuration
-  command:
+  shell:
     cmd: "postconf {{item.key}}={{item.value}}"
   loop:
     - {key: "address_verify_map", value: "btree:/usr/lib/postfix/bin/verify"}