Il 2021-10-07 12:40 Rob Kampen ha scritto: > mydestination = localhost localhost.localdomain > mydomain = example.org > myhostname = mx.example.org > mynetworks = 127.0.0.0/8, [::1]/128 Not that I expect it to be the cause, but you need a coma between "localhost" and "localhost.localdomain" in mydestination. > I had originally only used "postconf -n" as it is MUCH smaller than > postconf , however it still shows no material differences. Yeah, it seem the config are very similar (with the exception of virtual_alias_maps, which you explained). Regards. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti at assyoma.it - info at assyoma.it GPG public key ID: FF5F32A8