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I sent an Email with a 22.1MB file size attachment, that I got a failure to deliver notice, saying the file size was too large. Checking online, it says that it will send up to 25MB.
and it wasn't on just one Email account, it was at least 6 of them. What is going on at COX?
The file limit includes the entire size of the email as well as the attachment. Try sending the attachment with a blank email.