Fix #9398

.env.example

@@ -164,6 +164,13 @@ MAIL_PASSWORD=null
 MAIL_ENCRYPTION=null
 MAIL_SENDMAIL_COMMAND=
 
+#
+# If you use self-signed certificates for your STMP server, you can use the following settings.
+#
+MAIL_ALLOW_SELF_SIGNED=false
+MAIL_VERIFY_PEER=true
+MAIL_VERIFY_PEER_NAME=true
+
 # Other mail drivers:
 # If you use Docker or similar, you can set these variables from a file by appending them with _FILE
 MAILGUN_DOMAIN=