@Loobc To overcome the difficulties of CG-NAT port-forwarding the PCP has been standartized, but your carrier can refuse your request. In that case unfortunatelly, you don't have any other option...

@CMaurice The screenshot you posted is for SNMP, not SMTP. The SNMP protocol is used for network infrastructure management and monitoring purposes. Here you can read in more details about this...

@Loobc The simpler way is to contact your ISP and ask them to open these ports for you through the CG-NAT (if possible).

@Rajesh.G Try connecting the cable to the other ethernet port of Deco 2 and if it doesn't make any difference then change the cable with another one (CAT 5E/6).

@NBX Follow this thread to troubleshoot your issue.

@OneEyeBilly You have the ability to add manually in the Whitelist: As for the statistics try the Home Schield - Weekly and Monthly reports: To use these a Tether app has to be installed on your...