#1.3
dkim_domain = ${if eq{${lc:${domain:$h_from:}}}{}{$primary_hostname}{${lc:${domain:$h_from:}}}}
dkim_selector = x
dkim_private_key = ${if exists{/etc/virtual/${lc:${domain:$h_from:}}/dkim.private.key} \
{/etc/virtual/${lc:${domain:$h_from:}}/dkim.private.key} \
{${if eq{${lc:${domain:$h_from:}}}{} \
{/etc/virtual/$primary_hostname/dkim.private.key} \
{0} \
}} \
}
dkim_canon = relaxed
dkim_strict = 0