We are monitoring several backup services within one mailbox. All of the backup services send emails to one email account. We followed the instructions given for the previous question
We have seen "authentication failed errors and socket Error 10060" with office360,
We have seen "connection timed out" errors with our actual email address.
We login to the account via Office365. Our domain Host did see a "No MX record for the domain" notice.
We do have Clowd Flare configured to prevent denial of service attacks.
This is a lot of moving parts. Do you have any suggestions?