same is happening to me its driving me nuts.
everyone i know sends to username @mac.com
but when i reply i now have to change the outbound email address to @me.com
i get a tiny message which pops up for less than half a second, followed by the original message (not sent), even greter
is the problem that the undelying (Lost / Hidden) message seems to prevent you from closing the email, however the underlying message is just plain missing. This means i have to close email down and restart to clear the missing message.
Any Clues guys?
I would like to get confirmation from someone who actually knows, but from what I can gather from other threads it seems as if Apple has simply terminated the use of .mac within iCloud. Apparently I can only use my @me address from now on.
.mac addresses (well, mine and Rogers at least) still work, I have no idea why yours does not but Apple have not "terminated the use of .mac within iCloud"