diff --git a/rootfs/etc/confd/templates/ssmtp.conf.tmpl b/rootfs/etc/confd/templates/ssmtp.conf.tmpl
index 551c69b..4052a27 100644
--- a/rootfs/etc/confd/templates/ssmtp.conf.tmpl
+++ b/rootfs/etc/confd/templates/ssmtp.conf.tmpl
@@ -1,7 +1,7 @@
 root=
 mailhub={{getenv "SSMTP_MAIL_RELAY"}}
-UseSTARTTLS={{getenv "SSMTP_USE_STARTTLS"}}
+UseSTARTTLS={{getenv "SSMTP_USE_STARTTLS" "yes"}}
 AuthUser={{getenv "SSMTP_USER"}}
 AuthPass={{getenv "SSMTP_PASSWORD"}}
-AuthMethod={{getenv "SSMTP_AUTH_METHOD"}}
+AuthMethod={{getenv "SSMTP_AUTH_METHOD" "LOGIN"}}
 FromLineOverride=yes