Roy RainfordI have two email addresses, one is a longstanding TalkTalk address which is working on my old iMac for sending and receiving mail. The other is an iCloud address which works on the iMac and on a new MacBook Pro for sending and receiving. However the MBP doesn't receive emails sent with the TalkTalk address. System Prefs - Internet Accounts on the MBP show: "Unable to verify account name or password". Sending on the MBP works.
I used iCloud to transfer settings, Contacts etc from the iMac to the MBP.
OS High Sierra on the iMac and Catalina on the MBP.
I have contacted Tech Support at TalkTalk but no reply so far. Is there anything else that I can do?