diff --git a/lib/castopod.sh b/lib/castopod.sh
index 735fe95..4edee66 100644
--- a/lib/castopod.sh
+++ b/lib/castopod.sh
@@ -58,7 +58,7 @@ CP_EMAIL_SMTP_HOST="mail.$DOMAIN"
 CP_EMAIL_FROM="castopod@$DOMAIN"
 CP_EMAIL_SMTP_USERNAME="admin"
 CP_EMAIL_SMTP_PASSWORD=$ADMINPASS
-CP_EMAIL_SMTP_PORT="465"
+CP_EMAIL_SMTP_PORT="587"
 CP_EMAIL_SMTP_CRYPTO="tls"
 EOF
 chmod 600 /federated/apps/castopod/.env