Reindl Harald:
> > Steve Fatula:
> >> Have not seen a discussion of this lately, I'd like to hear pros
> >> of disallowing said spoofing. It appears it's "allowed" in the
> >> SMTP "standard". So, are there reasons to not allow it?
> >
> > You mean, forbid mailing list postings (like yours), because they
> > arrive from outside, but have a sender address inside the network?
>
> sorry but they do not have!
>
> on some internal-relays maybe but this is not the place
> where spoof-protection is a topic
>
> but on your mx-side they are coming from my address and the
> received mails have an envelope @postfix.org
For most users, "spoofing" is about email with their address in the
From: header, coming from an outside machine. The average email
user has no idea what an envelope sender is.
Wietse
