David Favor:
[ Charset ISO-8859-1 converted... ]
> Viktor Dukhovni wrote:
> > On Sat, May 29, 2021 at 11:30:51AM -0500, David Favor wrote:
> >
> >> # cat /etc/postfix/sender_dependant_default_transport
> >> /.*@davidfavor.com/ :
> >> /.*@fixdeliver.com/ :
> >> /.*/ discard:
> >>
> >> 7) Sending message still allows random sending domains...
> >
> > The transport table only selects a delivery channel, you've chosen
> > discard as the delivery channel for messages from unexpected domains.
> >
> >> # echo test | mailx -r some...@foo.com -s "Test Message - $(date)"
> >> da...@davidfavor.com
> >>
> >> May 29 11:29:47 net17-david-favor-smtp postfix/qmgr[48007]: F25241BA2030:
> >> from=<some...@foo.com>, size=430, nrcpt=1 (queue active)
> >> May 29 11:29:47 net17-david-favor-smtp postfix/discard[48021]:
> >> F25241BA2030: to=<da...@davidfavor.com>,
> > ----------------------
> >> relay=none, delay=0.01, delays=0.01/0/0/0, dsn=2.0.0, status=sent
> >> (davidfavor.com)
> > ----------
> >
> > The message was discarded (delivered nowhere, as requested).
>
> Mention what to use in place "discard" to block disallowed sending domains,
> then log a message with DNS != 2.0.0 as the reason code.
Use error: instead of discard:.
Wietse
