Day 153: The Timeout That Was Really a Firewall

Connect a mailbox to Pinchy on a cloud server and the test could fail with a bare 'Connection timed out,' which reads as 'your mailbox settings are wrong.' Often they aren't. Most cloud hosts block outbound SMTP ports by default, so sending on port 465 times out no matter how correct your credentials are (PR #847). The test now runs the receiving and sending legs separately, and when the sending…