Example 5: Require that all mail sent from your partner organization IP address or address range is encrypted using TLS

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To identify your partner organization by IP address in the New EAC, use the options during setup as shown in the following screenshot:

Screenshot that shows the screen on which the mails by partner organization are identified by IP address of the sender.

Add the requirement for TLS encryption by using the following setting:

Screenshot that shows the screen on which IP addresses by which Partner organization will be identified is set.

To identify your partner organization by IP address in the Classic EAC, use the options during setup as shown in the following screenshots:

Screenshot that shows to choose the IP address to identify your partner organization.

Screenshot that shows to enter your partner organization's IP address.

Add the requirement for TLS encryption by using the following setting:

Screenshot that shows to choose TLS to encrypt email from partner organization.

When you set these restrictions, all mails from your partner organization sent from the IP address or address range you specify must be sent using TLS. Any mail that doesn't meet this restriction will be rejected.