Apple appears to be experiencing issues with its iCloud Mail service today, as a growing number of users report receiving a delivery error message from postmaster@mac.com for every email received (as pictured above). Most users report still being able to receive emails but also receiving the above error report for each email, while others claim the problem is only happening on specific accounts. An Apple support thread has been started with an increasing number of posters experiencing the same issue since this morning.

There are also several users on Twitter complaining of the same error, but Apple ha yet to update its system status page to reflect the problems with Mail.

https://twitter.com/arumandox/status/309717313265999874

Anybody else using http://t.co/yMNQlQaozp email addresses getting mail delivery error messages after receiving actual emails? It’s annoying!

— Tabitha T (@Tabbulous) March 7, 2013

@icloud mail widespread failures on inbound messages. Status page is all green: http://t.co/J8A8TTreur #fail

— Magnum B.I. (@datasaur) March 7, 2013

Anybody else have ‘Problem during delivery processing’ from postmaster@mac.com ? #iCloud #Mail #Alias #fail

— John Stoll (@jstoll) March 7, 2013

Apple is keeping mum of their iCloud mail problems, but the infamous “Error in sieve filter” is their issue | http://t.co/9zGxrHVO4K

— cteodor (@cteodor) March 7, 2013