Can’t send email from apple devices
Thursday I couldn’t send emails from iPad or iPhone,still receiving email's, error message (The sender address was invalid) so rebooted all equipment including the router have left it couple of days but still the same problem. Oddly I can fully access my mail from My VM account send and receive fine. I have never had this before any ideas please. I have read the forum pages and tried some fixes no luck
And have you checked the server settings part of your Apple email client so it matches the settings in the section 'Connecting your Email to a Client App'
https://www.virginmedia.com/help/broadband/manage-email-account
VM seems to have started enforcing its current settings for email more rigorously so previous/old settings (which may have worked in the past) are no longer working. It is the outgoing SMTP settings you need to check