** Reply to note from [EMAIL PROTECTED] Tue, 6 Apr 2004 15:10:33 -0400
My ISP here (Bigpond) is about to implement blocking port 25 for all
their
dynamic IP customers.
Good! That's ok with me, as soon as their smtp server, which I'm then forced to use is not blacklisted!
This would not be acceptable to me at home on my cable modem. I only use my cable modem ISP for transport only. My mail accounts require authentication before I can relay off them. If I relay through an Adelphia server, but have a StumpyDogs.org or RVClub.net address on the email, that could look like a forgery.
There could be workarounds. Like for example allowing connection to outside servers on port 587, which should be authenticated.
SPF can help here. I have mx:mn.rr.com set for argle.org so that receiving mailservers know that argle.org e-mail can originate from
RoadRunner's servers legitimately. Port 587 should only be used for authenticated submissions to keep from being an open relay.
-- Daniel Taylor VP Operations Vocal Laboratories, Inc. [EMAIL PROTECTED] http://www.vocalabs.com/ (952)941-6580x203 _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [EMAIL PROTECTED] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
