Whenever I email a particular iCloud email address, I get a bounce message in return.
Sending to the @iCloud.com address from Gmail:
Mail Delivery Subsystem
There was a temporary problem delivering your message to email@example.com. Gmail will retry for 44 more hours. You'll be notified if the delivery fails permanently.
The response from the remote server was:
450 4.2.2 <firstname.lastname@example.org>: user is overquota
What does user is overquota mean in reference to Apple's email software?
How can this iCloud email address receive future email messages?