Thanks Bob....I retried it and got the following response again:
Your message to firstname.lastname@example.org couldn't be delivered.
marien.res wasn't found at belivehotels.com.
pttaylor123 Office 365 marien.res
Action Required Recipient
Unknown To address
How to Fix It
The address may be misspelled or may not exist.
Oh well...I will look for another resort that has a proper email.