mailing list archives
RE: Fun new policy at AOL
From: "Tony Hain" <alh-ietf () tndh net>
Date: Thu, 28 Aug 2003 12:53:16 -0700
Matthew Crocker wrote:
Shouldn't customers that purchase IP services from an ISP use
mail server as a smart host for outbound mail?
Look carefully at that question and find the logic error.
In case you missed it, the customer purchased 'IP' service, not 'ISP mail
We block outbound port
25 connections on our dialup and DSL pool. We ask our customers that
have their own mail servers to configure them to forward through our
mail servers. We get SPAM/abuse notifications that way and can kick
the customer off the network. We also block inbound port 25
connections unless they are coming from our mail server and
customer setup their MX record to forward through our mail
virus scan all mail coming and going that way. We protect our
customers from the network and our network from our
customers. We are
currently blocking over 3k Sobigs/hour on our mail servers. I would
rather have that then all my bandwidth eaten up by Sobig on all of my
Running a walled garden is fine as long as that is what your customers are
signing up for. One question though, why aren't you also running a web proxy
and NetNanny to protect your customers from the 'bad' content on port 80?
What makes port 25 so special?
SMTP & DNS should be run through the servers provided by the ISP for
the exact purpose. There is no valid reason for a dialup customer to
go direct to root-servers.net and there is no reason why a
should be sending mail directly to AOL, or any mail server for that
matter (besides their host ISP)
This line of thinking leads us to a cabal that has complete control over
communication. Think about it, a few large organizations allow/encourage
abuse, then claim that the only resolution to the abuse is to route all
communication through the centrally controlled servers. We end up back in
the PTT style monopolies where censorship becomes trivial.
Re: Fun new policy at AOL Joe Provo (Aug 28)
Re: Fun new policy at AOL up (Aug 28)
RE: Fun new policy at AOL R. Benjamin Kessler (Aug 28)
Re: Fun new policy at AOL Jonathan Hunter (Aug 28)
RE: Fun new policy at AOL McBurnett, Jim (Aug 28)