diff --git a/deploy/ansible/install.yml b/deploy/ansible/install.yml
index 0dfeff6f..195a50bb 100644
--- a/deploy/ansible/install.yml
+++ b/deploy/ansible/install.yml
@@ -45,7 +45,8 @@
 
      - name: Install Postfix
        apt:
-         name: postfix,mailutils
+         # libsasl2-modules fixes "SASL authentication failure: No worthy mechs found"
+         name: postfix,libsasl2-modules,mailutils
 
      - name: Install Certbot
        apt: