New Code! (two in one day)
Postoffice has been rolled up to version 1.4.6 with the addition of one additional configuration option; the new option trusted= lets you define a trusted host that will be treated as a relayable local host regardless of MX settings.
It’s sort of like the localmx setting, but sans MX tweaking.
I’ve also slightly modified the way I search for MXes so that I don’t attempt to look for wildcard MXes when checking for localmx.
There aren’t any bugs here – at least none that have bitten me yet – just new features, so it’s a perfectly good New Code! candidate for my afternoon code release.