diff --git a/firefly3/.env b/firefly3/.env
index a40df14..113e708 100644
--- a/firefly3/.env
+++ b/firefly3/.env
@@ -125,12 +125,12 @@ COOKIE_SAMESITE=lax
 # For instructions, see: https://docs.firefly-iii.org/advanced-installation/email
 # If you use Docker or similar, you can set these variables from a file by appending them with _FILE
 MAIL_MAILER=smtp
-MAIL_HOST=mail.jfreudenberger.de
-MAIL_PORT=465
+MAIL_HOST=postfix
+MAIL_PORT=587
 MAIL_FROM=system@jfreudenberger.de
-MAIL_USERNAME=system@jfreudenberger.de
+MAIL_USERNAME=null
 MAIL_PASSWORD=null
-MAIL_ENCRYPTION=tls
+MAIL_ENCRYPTION=null
 
 # Other mail drivers:
 # If you use Docker or similar, you can set these variables from a file by appending them with _FILE