I got 5 accounts on this Mail.app. One of them keeps on asking for password again and again on my Mac, today i reentered it as usual and then it says 'unable to verify account name or password' It's a @live.com account, i made sure i was entering it correctly by logging on at outlook.com, this account works fine on my iPad and iPhone, not sure what is wrong but it's annoying. Only on the Mac it keeps asking to reenter password. I tried restarting my computer, also deleted the account and tried to re-add, no good.I now have no access to it via Mail.app since i can't add it. Oh wow i just kept trying to login and it decided to work again, didn't do anything.

Manually configure Mac Mail for email hosted on Exchange 2007 • Last updated on: 2016-05-17 • Authored by: Aaron Medrano The following article shows you how to set up your Microsoft Exchange 2007 email account with Mac Mail. Note: Exchange 2007 runs only on Mac OS X version 10.6 or later. If you’re unsure about which OS X version you’re running, click the Apple icon located in the top-left corner and select About This Mac. • Open Mac Mail and select Mail > Preferences. • In the new window that appears, click the Accounts tab in the top menu bar and then click the plus (+) symbol in the lower left corner.
• Select Exchange and then click Continue. • On the next page, enter your full name and your entire Microsoft Exchange email address and password.
The recommended application for using the Office 365 service is Outlook. See instructions. These instructions have been prepared for Mac OS X 10.11 (OS X El Capitan), but they can be applied to other operating system versions with some adjustments. Your email provider deactivated or suspended your account. Contact your email provider for help. Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement.
Incoming Mail Server Host Name for ATT.NET is imap.mail.att.net Outgoing Mail Server Host Name for ATT.NET is smtp.mail.att.net For domains still in transfer or propagation, temporarily use the IP Address in place of Incoming & Outgoing Mail Server. Att.net email server settings for mac. Verify the settings for your email provider using your email address. For Mac OS or iOS, get details about account type, incoming/outgoing server details and more. Outgoing mail server: smtp.mail.att.com (IMAP) or outbound.att.net (POP3) Check or enter your User Name (full AT&T email address). In the password field, enter your secure mail key and select the Remember password checkbox. If you are having problems sending email try these email settings for your smtp server: mail.bellsouth.net using the default ports, with no SSL, and authentication set to none. This was one of the original email settings for bellsouth.net, back when it was a Southeastern regional company and still worth something. I want to be able to download email into Apple Mail. I cannot seem to get the settings right nor can I find any helpful posts in the ATT.net help.
I've got about 5 users this is happening to - Checking from a computer (OWA) works fine, and they can download the Outlook app on their iPhone, and it works there too, but the Apple Mail app can't verify the information or log it on. To make sure if this is more client related or Office 365 account related, could you also use another account in your organization to test on your Outlook for Mac client? Regards, Yang. Unsolved Mail app 'unable to verify account name or password' for hotmail account for 10 days (self.applehelp) submitted 2 years ago by Kagawanmyson I can still send mail, but it refuses to pull down anything as if the POP server has changed.