Recently I’ve noticed that I can send emails from my iPhone using 4G but not when I’m connected to my wifi. I’ve reset my passwords and deleted accounts and added it again but still not working. Can someone please help. It’s driving me crazy.
Virgin Media use block lists of IP Addresses associated with spam activity to deny access to their SMTP servers; list is provided by Spamaus. This seems the most likely cause of the issue being experienced. To confirm this when the issue next occurs perform the following steps on the same device: