[0kaba0hub]

Goes with yarilomail/yarilo#2374. The Submission page described one relay connection per message, sent at DATA. Now: one connection per transaction, opened at MAIL FROM and closed at the end of DATA, RSET, QUIT or a drop; MAIL FROM, each RCPT TO and DATA reach the relay as the client sends them and the relay's reply is the client's; a recipient the relay refuses is refused at its RCPT and the message goes to the others; an empty relay host or an unreachable relay fails MAIL FROM; the five-minute idle timeout and submission_relay_command_timeout. The RFC page is unchanged.

[0kaba0hub]

APPROVED at the current head. The Submission section and the Relay section now say what #2374 does: a connection per transaction from MAIL FROM to the end of DATA, RSET or the client leaving; the relay's reply as the client's; a refused recipient alone refused; 451 at MAIL FROM without a relay; the five-minute idle bound and the per-command timeout. Build green.