Thanks! that was it. All the the other email accounts automatically got their settings correct. This accounts settings were way off for some reason.
Posts made by chrislangton
RE: [Solved]Opera Mail: Email account won't workOpera for Windows
[Solved]Opera Mail: Email account won't workOpera for Windows
One of my email accounts won't work. It has a yellow triangle with an exclamation mark next to it. I have tried deleting the mail account and then adding it again, but the triangle is still there.
Other accounts working fine.