Cannot add email user "sbride" to petalumacoffee.com

Cannot add email user "sbride" to petalumacoffee.com

I do see a small red error flash above the list of email accounts when the dialog goes away but it disappears too fast for me to read.

Using any other email address works fine just not "sbride"

Seems to be no collision with existing user account addresses.

Any help would be appreciated

Craig