Q: How to correct error message that connection to server failed

Hello Gregg,

It may help to remove the affected account, then readd it.

 

1. Delete the affected email account from your device.
   1. Tap Settings > Mail, Contacts, Calendars.
   2. Tap the affected email account.
   3. Tap Delete Account.
   4. Add your account again.

If you're still having issues retrieving e-mail, the article linked below details a number of additional troubleshooting steps that can help.

Get help with Mail on iPhone, iPad, and iPod touch
https://support.apple.com/en-us/TS3899

Cheers,

Allen