Mail cannot log into accounts after El Capitan

great THANKS, This has happened before Godaddy switched SSL ports to get things working I was also told to switch off WIFI ??

But this is now working hope fully switching off the "Automatically detect and maintain account settings" box will stop it from recurring..... Thanks Again

skyfrance, you are the Dude! I went through the Apple/GoDaddy fingerprinting too. Did everything you listed and the account is now solid.

Many mahalos!!

Finally! michelg007 after going through this thread and trying all the proposed solutions, this one worked. What a fun 3 days this has been! Thanks again michelg007!

I had a similar problem with being able to receive email with my pop setting but unable to send using my smtp details.

I logged on to my ISP and changed my SMTP password, then re-entered my new password in Mac Mail. No luck there, same old, same old!

Dowloaded Airmail 2 from the app store. That didn't like my settings either.

Used Airmail's online chat messenger and asked why I was having smtp issues after upgrading to Mac OS El Capitan. The advice in the following reply seems to have resolved the problem.

This is an issue with Apple's Preferences Database. You can reset it:

• Open Terminal (Cmd+Space Bar and enter Terminal)
• Copy/paste/enter this command:

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchSe rvices.framework/Versions/A/Support/lsregister -kill -r -all local,system,user

That did it (Rahul's post, not the "solved" post). Thanks!

Call Apple Support.

When I did, they had me open KeyChain Access and search for 'veri".

I went through each entry and deleted any that had a red warning displayed.

After restarting, all my Google accounts began working again.

I could even add new ones.

I did have to re-enter all the passwords, but that's a small inconvenience.

Hi - I'm not sure if you're still having this problem, but...

Have you checked if your online account is enabled for POP3 access? For my hotmail account, I had to login online (at hotmail.com) and do the following:

• Once I logged in, I clicked on the "gear" icon and chose "options".
• Then, under "Accounts" I clicked on "POP and IMAP".
• Then, under "POP options" I said "yes" to letting devices and apps use POP (apparently the default is to say no).

That's it. After months of frustration, this worked for me.

Thanks! This fix helped.

Today I got a message stating the email could not connect. I went to the web version, changed my password -twice- but both the Mac and iPhone did not recognize it. I searched several web pages, checked the online settings of POP, IMAP and SMTP, but still not working. I updated the system to Sierra a couple of months ago. This is ridiculous.

... Solution

For Hotmail account (my problem) the solution for me was to add an outlook.com alias on my microsoft account.

ex:

olduser@hotmail.com (principal Alias)

olduser@outlook.com (created Alias)

Then maintaining my old address i switched the principal alias to the outlook alias and apply changes.

back on apple mail app, you can add account, add mail account, enter your outlook account, and that's it.

... The problem

On El Capitan my hotmail account suddenly stops working with message "can`t verify password or account"

I use Airmail. Sadly, too much hassle with OSX Mail, and it feels completely unsupported. Not worth my time to sit on public forums all day to troubleshoot email issues peculiar to OSX. Airmail works for me and the customer support is superb. http://airmailapp.com/