Click Browse and select the certificate file.The Import Outbound Certificate window opens. If the mail server uses TLS inspection, do these steps to enable the MTA to support it:.Optional: Select Add signature to scanned emails and enter the message to add to the end of the email body after it is successfully processed.You can also configure the MTA to only scan the emails and not forward them to the mail server. This DNS configuration allows load balancing and high-availability capabilities based on DNS configuration. This lets you use multiple mail servers based on a DNS name.

Note - From R80.20, you can define a domain object as the Next Hop. Click the Next Hop cell and select the node object that is the mail server for this rule.The default setting is to use the wildcard * to accept all recipient domains. Enter the domain for the SMTP traffic for this rule.Right-click the Domain cell and select Edit.These rules define traffic that is sent to the mail servers after the scanning is complete. In the Mail Forwarding section, add one or more rules.Select Enable as a Mail Transfer Agent.From the navigation tree, select Mail Transfer Agent.In SmartConsole, go to Gateways & Servers and double-click the Security Gateway.To enable the Security Gateway as an MTA: For a topology that uses TLS between the previous hop and the Security Gateway, you must import the mail server certificate to the Security Gateway. When selected, the Security Gateway is an MTA for SMTP traffic. Configure the network to forward emails to the MTA.The MTA configuration is the same for VSX and non-VSX gateways. Note - MTA is also supported on VSX gateways. The MTA is able to scan SMTP encrypted traffic for the supported blades.

The MTA first accepts the email from the previous hop, does the necessary actions on the email and then relays the email to the next hop. In such cases, there is a timeout for the email. When a gateway scans SMTP traffic, sometimes the email client is not able to keep the connection open for the time that is necessary to handle the email. The MTA works with these blades: Threat Emulation, Threat Extraction, and Anti-Spam and Mail Security. You can enable the Security Gateway as an MTA (Mail Transfer Agent) to manage SMTP traffic.

Mta port tester