It is possible to setup two email gateways such that if a record doesn't match the first server then it attempts a second server before failing to deliver?
Background: Client recently switched from in-house servers to Office 365. There was an email account setup before as a catch-all for web related matters (account configurations, password recovery, etc).
Since they are now on Office 365, they are saying that each email account costs money and are reluctant to create a full Office 365 account just for an email account.
I'm thinking rather than creating an Office account, maybe I can use a service such as Google Apps just for generic email addresses.
Unfortunately, I don't know off-hand how to configure domain records to try a secondary email server if the primary fails to deliver.