diff --git a/containers/mattermost/tasks.yml b/containers/mattermost/tasks.yml
index 6dfb6ba..25df719 100644
--- a/containers/mattermost/tasks.yml
+++ b/containers/mattermost/tasks.yml
@@ -127,7 +127,7 @@
           MM_SERVICESETTINGS_SITEURL: "https://{{ vault_domain }}/mattermost"
           MM_EMAILSETTINGS_SMTPSERVER: "{{ vault_smtp_host }}"
           MM_EMAILSETTINGS_SMTPPORT: "{{ vault_smtp_port }}"
-          MM_EMAILSETTINGS_ENABLESMTPAUTH: "true"
+          MM_EMAILSETTINGS_ENABLESMTPAUTH: "false"
           MM_EMAILSETTINGS_SMTPUSERNAME: "{{ vault_smtp_user }}"
           MM_EMAILSETTINGS_SMTPPASSWORD: "{{ vault_smtp_password }}"
           MM_EMAILSETTINGS_CONNECTIONSECURITY: "{{ vault_smtp_protocol }}"