If emails sent from Fonzip are being blocked, we recommend adding the following IP addresses and sending addresses to the safe list of the relevant email server.
185.82.223.153
185.82.223.154
185.82.223.155
185.82.223.156
185.82.223.157
185.82.223.158
51.222.38.0
54.39.213.32
Additionally, the sending address or addresses defined in Fonzip by the non-governmental organization sending emails