sending message content to the server failed--yahoo/iPad4
my yahoo email account was hacked yesterday evening, and I tried to sort that mess out on my laptop. When I returned to working on my iPad4 several hours later, I discovered that I was no longer able to send yahoo emails out. I keep getting the "sending message content to the server failed" message. I deleted my yahoo account from the iPad, then reinstalled it and rebooted the iPad and tried again. I still couldn't send messages. I just deleted and reloaded my yahoo account yet again, and I still just keep getting the same message when I try to send messages or replies out. I am still receiving emails. I have no idea if the hacking is related or not, or if the timing is coincidental but what can I do to fix this annoying problem?
please and thank you for any solutions!