This provides the most robust features. Note the following:

As a general rule, you should use SMTP only if HTTPS is not allowed or unsupported for some reason. Note the following:

When using SMTP, all traffic is unencrypted and can be easily intercepted and read. Beginning with ONTAP 9.15.1 you can also use TLS with SMTP (SMTPS). In this case, explicit TLS is used which activates the secure channel after the TCP connection is established.

The following port is typically used for SMTPS: Port 587

Regardless of the protocol used to deliver AutoSupport messages to our company, you can also send a copy of each message to one or more local email addresses. For example, you might send messages to your internal support organization or a partner organization.

Depending on your network configuration, the HTTPS protocol may require additional configuration of a proxy URL. If the proxy uses a port other than the default (port 3128) you can specify the port for that proxy. You can also optionally specify a user name and password for proxy authentication.