Learn how Sender Policy Framework (SPF) records work to prevent email spoofing, and how you can implement the correct SPF record for your domain.
How to use hosts files on client computers for Exchange Server testing and troubleshooting scenarios.
How to use the Resolve-DnsName PowerShell cmdlet to query MX records for multiple domain names at once.
How to manually configure the DNS servers used by Exchange Server 2013 for external lookups.
How to plan, test and implement changes to MX records and inbound email traffic routes in an Exchange Server environment.