| 1.2 Set 'Maximum receive size - organization level' to '10240' | SYSTEM AND COMMUNICATIONS PROTECTION |
| 1.5 Set 'Configure Sender Filtering' to 'Enabled' | SYSTEM AND INFORMATION INTEGRITY |
| 1.7 Set 'Maximum number of recipients - organization level' to '5000' | SYSTEM AND COMMUNICATIONS PROTECTION |
| 1.13 Set 'Message tracking logging - Transport' to 'True' | AUDIT AND ACCOUNTABILITY |
| 1.17 Set 'Maximum send size - organization level' to '10240' | SYSTEM AND COMMUNICATIONS PROTECTION |
| 1.18 Set 'Maximum receive size - connector level' to '10240' | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.3 Set 'Turn on script execution' to 'RemoteSigned' | CONFIGURATION MANAGEMENT |
| 3.5 Set 'Enable automatic replies to remote domains' to 'False' | CONFIGURATION MANAGEMENT |
| 3.7 Set 'Enable non-delivery reports to remote domains' to 'False' | CONFIGURATION MANAGEMENT |
| 3.8 Set 'Enable OOF messages to remote domains' to 'None' | CONFIGURATION MANAGEMENT |
| 3.9 Set 'Enable automatic forwards to remote domains' to 'False' | CONFIGURATION MANAGEMENT |
| Authentication Failure | |
| CIS_Microsoft_Exchange_Server_2016_Level_1_Hub_v1.0.0.audit from CIS Microsoft Exchange Server 2016 v1.0.0 Benchmark | SYSTEM AND INFORMATION INTEGRITY |
