Session

In the console: Settings › MTA › Inbound › Session

How long other servers may stay connected and how much they may send in one conversation.

SMTP Session Limits

Timeout

How long to wait for a client to send a command before timing out.

Settings of their own: see Expression. Name in the API: timeout.

Bytes Limit

The maximum number of bytes that can be transferred per session.

Settings of their own: see Expression. Name in the API: transferLimit.

Duration

The maximum duration of a session.

Settings of their own: see Expression. Name in the API: maxDuration.