On Tue, Dec 10, 2002 at 08:55:28PM +0000, Alan J. Flavell wrote:
> > - refuse Email that fails SMTP callbacks, even to postmaster
>
> Could you clarify your intention? Suppose a remote MTA already
> responds to a bounce at the mail from:<> stage in this way:
>
> 550 Sender Not Authorised [Originator entry 'postmaster@???'
> rejected message based on in-relay MTA 'othello.physics.gla.ac.uk']
>
> - are you going to try using some other sender in order to find out
> whether they'll let you reach their postmaster; or are you just going
> to refuse mail from that whole domain?
I currently block all mail from sites that refuse null froms and so do a
growing number of sites.
moremagic:~$ telnet mail1.merlins.org smtp
Trying 216.200.201.205...
Connected to mail1.merlins.org.
Escape character is '^]'.
220 mail1.merlins.org ESMTP Exim 4.10-mm1 #1 Tue, 10 Dec 2002 13:06:33 -0800 - mm4
helo foo.bar
250 mail1.merlins.org Hello 216-239-45-4.google.com [216.239.45.4]
mail from: <postmaster@???>
250 OK
rcpt to: <davenull@???>
550-Verification failed for <postmaster@???>
550-Called: smtpsrvr.btconnect.com [193.113.154.2]
550-Sent: MAIL FROM:<>
550-Response: 550 Sender Not Authorised [Originator entry 'postmaster@???' rejected message based on in-relay MTA 'magic.merlins.org']
550-This does not help fight spam effectively, breaks RFCs,
550-and prevents you from getting mail bounces back from us,
550-As a result, we cannot accept mail from you until you fix this
550 Sender verify failed
that said:
rcpt to: <postmaster@???>
250 Accepted
quit
221 mail1.merlins.org closing connection
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems & security ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | Finger marc_f@??? for PGP key
