During the last 2 days I've received 5 Mail Delivery System messages informing me that 5 individual emails which I sent several days ago could not be delivered. "Your message wasn't delivered because the recipient email provider rejected it……The following organization rejected your message: mx-eu.mail.am0.yahoodns.net ....... messages from 153.92.124.240 temporarily deferred due to unexpected volume or user complaints". All affected messages were to sky.com, yahoo.co.uk and aol.com email addresses that I regularly send to and all messages have been saved to the "Sent" folder.
This is the same problem that occurred back in October/November last year but obviously the solution found by email providers was not a long-term fix!
