On Sun, 12 Jun 2011, Mark Sapiro wrote:
On 6/12/2011 3:03 AM, Nigel Woodley wrote:
The spam problem I have is because we have many members from different
organisations linked by a private network.
Emails sent from these organisations are sent out to other members however
when they are received by other organisations on the private network they
are rejected because they have not been delivered internally on the private
network.
I don't understand. Either the Mailman server is on the private network
or not. If other servers on the network are looking at where mail
originates in order to determine whether or not to accept the mail, I
would expect them to be looking at the IP address of the sending server
or possibly things like the domain of the envelope sender or Received:
headers in the message. The last thing I would expect them to look at is
the From: header of the message. And, even if they are looking at From:,
you seem to say that the original sender whose address is in From: is
also on the private network.
The way I understood it was that the systems that are interconnected via
the private network expect all traffic that comes from Email addresses
hosted on the private network to come *via* the private network and not
from outside. This interpretation is based on the assumption that Mailman
is *not* on the private network.
Sounds like they should just whitelist the Mailman server's IP address
IMHO.
Geoff.
------------------------------------------------------
Mailman-Users mailing list Mailman-Users@python.org
http://mail.python.org/mailman/listinfo/mailman-users
Mailman FAQ: http://wiki.list.org/x/AgA3
Security Policy: http://wiki.list.org/x/QIA9
Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/
Unsubscribe:
http://mail.python.org/mailman/options/mailman-users/archive%40jab.org
