Sendmail on freebsd

[Bernt Hansson]

On 2017-01-04 14:06, Ian Smith wrote:
> In freebsd-questions Digest, Vol 657, Issue 5, Message: 18
> On Wed, 4 Jan 2017 08:26:48 +0100 Bernt Hansson <bah at bananmonarki.se> wrote:
>   > Hello list!
>   >
>   > Have a question or more about /etc/mail/access.
>   >
>   > Is this list appropiatefor this kind of question?
>
> I don't see why not.
>
>   > If not, please point me in the right direction.
>   >
>   > If  i put this in /etc/mail/access
>   >
>   > com    REJECT
>   >
>   > Does that reject all domains that contain com
>   > or just TLD com.
>
> The latter, BUT unless things have changed, you need to specify what
> kind of header it appears in, e.g (and yes, these are real entries):
>
> Connect:xyz		REJECT
> From:xyz		REJECT
>
> The former rejects all mail 'Received: from' any hostname *.xyz
> The latter rejects mail with 'envelope-from' any address@*.xyz
>
> For example, this (digest) message had first headers of:
>
> Return-Path: <owner-freebsd-questions at freebsd.org>
> Received: from mx2.freebsd.org (mx2.freebsd.org [8.8.178.116])
>      by xxxx.nimnet.asn.au (x.yy.z/x.yy.z) with ESMTP id v04C0M0x055062
>      for <smithi at nimnet.asn.au>; Wed, 4 Jan 2017 23:00:28 +1100 (EST)
>      (envelope-from owner-freebsd-questions at freebsd.org)
>
> Return-Path: is often, usually, but NOT always = envelope-from
>
> Connect:mx2.freebsd.org		ACCEPT
>   would accept all mail 'Received: from' hostname mx2.freebsd.org
>
> From:freebsd.org		ACCEPT
>   would accept mail from or _claiming_ to be from any address at freebsd.org
>
> That is: envelope-from addresses, as most other headers, can be forged,
> whereas Connect: hostnames are returned by DNS lookup on the IP address,
> and generally speaking can be relied upon - if your DNS server can be :)
>
> cheers, Ian
>
Well, that does not answer my question, or my question is not quite right.

Have this in access
romtelecom.net                  REJECT

Would sendmail reject that based on

com REJECT

/B