diff --git a/lib/mail.sh b/lib/mail.sh
index 2d783b4..3acec5c 100644
--- a/lib/mail.sh
+++ b/lib/mail.sh
@@ -154,7 +154,7 @@ EOF
 }
 start_mail() {
   # Start service with command to make sure it's up before proceeding
-  start_service "mail" "nc -z 172.99.0.16 25 &> /dev/null" "15"
+  start_service "mail" "nc -z 172.99.0.16 25 &> /dev/null" "25"
 
   # Generate the DKIM DNS key and setup
   docker exec mail setup config dkim