Internal Mail Hosts by Subnet

Question

Is it possible to list a whole subnet under Internal Mail Hosts? I want all machines on a specific subnet to be able to relay email off the ESA.

AimanAnsari · Accepted Answer

Hello Jamie, 
 To add a mail relay server: In the Internal hosts and networks text box, enter the hostname, IP address, or IP address range, and click Add. Note: To set an IP address range, use CIDR notation (for example, 192.168.45.0/24).

Regards,