[CentOS] Evolution problem - not sending/receiving any more

Not at all clear on what happened. I haven't downloaded my mail from gmail into Evolution for a couple of days, and today I changed my gmail password. Even though I told Evolution to forget my passwords and had to reenter them, I am unable to receive any email from the server. I get a quick "retrieving Pop summary" and then the window vanishes and nothing gets downloaded.

When I try to send email, I get a window that says "Unable to authenticate to SMTP server" and a few other things.

I have triple-checked the password (couldn't get here if I didn't know it), so what else could be the problem? I swear I didn't change ANYTHING else.