I'm having some email issues with exchange online. Some of my customers are reporting bounced back emails with the following:
Sorry, I couldn't find any host named coyotecanyonvineyard.com. (#5.1.2)
or
550 5.1.2 <jeff@coyotecanyonvineyard.com>... Host unknown (Name server: coyotecanyonvineyard.com.: no data known)
I've done test emails from a gmail account, apple based me.com account, and aol account. The gmail and me.com account go through. The aol mail gets one of the above errors.
Not really sure what to do. Thanks.