Basically the subject sums this one up. I am able to check for firmware updates via the webpage manager but when I send a test email it says it fails. However when I put MBLD in DMZ on my modem router I was able to send and receive the test email. Basically I think I do not have a port I should be forwarding and opening up on my firewall does anyone know which one MLBD uses for this? I do not want it in DMZ all the time.