Sometimes, the mail server for *hatch.name* is extremely slow. While
there isn't much I can do about it for external senders, I can at least
ensure that email messages sent by internal services like Authelia are
always delivered quickly by rewriting the recipient address to my
actualy email address, bypassing the *hatch.name* exchange entirely.
AWS is going to begin charging extra for routable IPv4 addresses soon.
There's really no point in having a relay in the cloud anymore anyway,
since a) all outbound messages are sent via the local relay and b) no
messages are sent to anyone except me.