To enable or disable transmission or reception of messages by the mail transfer agent of Kaspersky Secure Mail Gateway:
This opens the Settings for sending and receiving window.
If you want to apply settings to all cluster nodes simultaneously, select All nodes.
If in advanced MTA settings, the Reject messages for unknown recipient domains
(reject_unverified_recipient) setting is enabled, receiving messages is also disabled.
Attention! These settings control transmission and reception of messages by the mail transfer agent of Kaspersky Secure Mail Gateway.