If you have this kind of warning in the your mail relay logs :
“external host … attempted to send as …”
You have to configure the “internal hosts” allowed to use this relay :
dkim-filter :
vi /etc/dkim-filter.conf
###…
InternalHosts /var/dkim-filter/internal.hosts
###
vim /var/dkim-filter/internal.hosts
###
127.0.0.1
relayed.mydomain
relayed2.mydomain
…
###
/etc/init.d/dkim-filter restart
dk-filter:
use the -i option :
vim /etc/default/dk-filter
-i /var/dk-filter/interal.hosts
vim /var/dk-filter/interal.hosts
###
127.0.0.1
relayed.mydomain
relayed2.mydomain
…
###
/etc/init.d/dk-filter restart
InternalHosts /var/dkim-filter/internal.hostsInternalHosts /var/dkim-filter/internal.hos###
