Apple Mail (Mac Mail)

Have iMac desktop / Mountain Lion.
My mail is giving me an Alert / The connection to host.biz.mail.yahoo.com on 995 failed.
It indicates I have a problem with mail server or network. I haven't made any changes to anything but have this problem. In my mailbox listing on the left side of my mail there are numerous circular symbols with exclamation points inside. I left mouse click on these symbols and it gives me my online status. Indicates that one of my accounts is offline due to network problem. A drop down box appears to ask me for my password. I type my password in but nothing happens.
Does anybody know what I can do to get back on online with Apple Mail?
Thanx...

Have you tried to access your mail account from your browser? If it's a network problem, there isn't anything you can do until Yahoo resolves it. Try using Safari or whatever browser you're using to go direct to your account on the web by accessing the Yahoo mail server instead of using your Apple Mail application. If it's other than a network problem, it'll show up there.

chscag,
Thanx for your reply. For the moment, am using my web browser (Firefox), as you suggested, to access my mail with Yahoo Mail and it's working fine. Would prefer to use my Apple Mail, so I found a possible fix by resetting my mail preferences for Apple Mail, but unfortunately, it didn't resolve the problem. Will continue my search and call Apple help and talk with somebody with a possible soulution.
Thanx once again for your suggestion!
naturesbestside.com

naturesbestside said:

Have iMac desktop / Mountain Lion.
My mail is giving me an Alert / The connection to host.biz.mail.yahoo.com on 995 failed.
View attachment 19628 View attachment 19629

Click to expand...

Maybe you've solved this by now, but I think your host may be incorrect: should be xyz.bizmail.yahoo.com, e.g. pop.bizmail.yahoo.com. No dot/period in the bizmail portion.

Checco,
I have indeed resolved the problem. Your answer was one of the problems I encountered.
Thanx so kindly!

Pleasure!