CalDav not received from iPhone
I have a Pop account for email and calendaring. When I send an email or calendar item from Outlook on my laptop both are received by the recipient. If I send a calendar invite from my iPhone (XS) IOS 15.1, the calendar invite is not received. Since it works on my laptop I can only assume it is an issue on my iPhone. This is NOT an iCloud account. my iCloud calendar invites works just fine.
iPhone XS