Here is what I did to resolve the problem:
In Mail/preferences/accounts/account information/ and at the bottom of the box there is a toggle arrow up and down to edit the outgoing mail server, check the box "use only this server" and hit this toggle button and select "edit SMTP Server List" at the very bottom of the email names.
Select Advanced tab. Correct and/or add usernames and passwords as needed for each email account. Be sure to select OK each time to get the passwords to hold! Some changes don't seem to hold unless you click OK before you move on.
To test: Window/activity (a little windows will pop up showing activity bars) and then "get mail" button. This should show any problems
Another test: window/connection doctor
This shouldl fix both pop and imap. so far it worked on yahoo, mobile me, gmail, hotmail, and others. Of course, you will need to know the incoming and outgoing mail server info, user name, and passwords.
Too bad we have to go though hoops to use an email program that used to work well. Worse yet, many may not know for days that their email isn't working.
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This is easy method of setting up your email accounts but may not allow enough detail to make the mail accounts function properly in Mail 5.0:
system preferences/internet and wireless/mail, contacts, calendars/ add account
shyannlindy listening to the outdoor concert from
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