Integration through an edge gateway on which SMTP verification of recipient email addresses is enabled is a type of integration where Kaspersky Secure Mail Gateway receives messages from an intermediate gateway and relays them to internal mail servers, and also receives messages from internal mail servers and relays them to the edge gateway. In this case, SMTP verification of recipient email addresses is enabled on the edge gateway.
SMTP verification of recipient email addresses is used by mail systems to prevent reception of messages for nonexistent addresses.
To configure integration of Kaspersky Secure Mail Gateway into the corporate mail infrastructure through an edge gateway on which SMTP verification of recipient email addresses is enabled: