max_recipients_per_batch

Since: Dev Builds Only

The functionality described in this section requires a dev build of KumoMTA. You can obtain a dev build by following the instructions in the Installation section.

Optional integer. Defaults to 100.

Specifies the maximum number of RCPT TO commands when sending a message that has multiple recipients.

If a message has more than this number of recipients then each chunk will be attempted successively in separate transactions. Those transactions will re-use the current connection, but if the connection is broken, the excess will remain eligible for immediate delivery which will typically continue on a new connection.