On 2017-03-31 15:01:17 (+0200), Ralf Hildebrandt <r...@sys4.de> wrote: > * Mario Theodoridis <mario.theodori...@regify.com>: > > i'm having a curious issue with our postfix instance. > > > > It seems it is sending emails to a domain's A record when no MX is found. > > > > Is that standard? > > Yes. > > > If so, can i disable this somewhere? > > No.
If you own a domain that should not be receiving email, you can prevent MTAs trying to send mail to it by explicitly specifying a null MX in the DNS: bikinibottom.com. IN MX 0 . Philip -- Philip Paeps Senior Reality Engineer Ministry of Information