Fix smtpd configuration for newer syntax

Julien LepillerWed Jan 29 21:40:50+0100 2020

c397649

system-configuration/systems
namelast commitdate
ene.scmSet up a master/slave DNS config for ene and hermesTue Jul 23 21:53:14+0200 2019
hermes.scmAdd socialThu Dec 12 23:15:29+0100 2019
sybil.scmAdd libvirt to sybilSat Oct 12 11:41:02+0200 2019
tachikoma.scmReinstall tachikomaSun Dec 08 13:47:55+0100 2019