The sender address xxx was rejected by the server smtpout.secureserver.net.
The server response was: authentication required
Select a different outgoing mail server from the list below or click Try Later to leave the message in your Outbox until it can be sent.
Is anyone else having this problem since they updated their computer system, using OS X Yosemite 10.10.5?
The SMTP server settings are likely somehow incorrect.
If you can’t send or receive email on your Mac - Apple Support
Here's how to get to the outgoing email settings:
Change Outgoing server settings in Mail on Mac - Apple Support
The SMTP server settings are likely somehow incorrect.
If you can’t send or receive email on your Mac - Apple Support
Here's how to get to the outgoing email settings:
Change Outgoing server settings in Mail on Mac - Apple Support
Mr Hoffman solved my problem here on another post I made. Here is the question headline:
Out going email, getting error message about the server
Thank you Mr Hoffman!
https://discussions.apple.com/thread/250074543?answerId=250132243022&page=1
Cannot send message using the
