The guest gets as far as the verification screen. There he sits forever, since no code is coming. The email and txt message that are supposed to be sent are now being rejected by our email server (Exchange). It appears that NetSight is now forcing authentication of those messages. The Exchange server is set to allow these messages anonymously, and so rejects the blank password in the auth exchange. Oddly enough, this action is only happening with the guest portal. Alarm and event notifications are still being successfully sent anonymously from NetSight. WireShark traces have confirmed this behavior. Again this behavior started with the upgrade to 5.1. Does anyone have a cure? Can the email messages sent via guest portal be modified to send anonymously as they did in the past versions?