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Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.
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In that case 1st set proper SPF and DKIM record and check if that allows gmail to accept messages?
Else log a call with Microsoft and they could help you to resolve if issue is related to SPF / DKIM
If domain itself is blacklisted, then majority of email recipients should block incoming emails from that domain, in that case you need to take domain registrar help to remove domain from blacklist