You don't seem to realize that some people need to receive their E-mail.
I, of course, do not overlook that.
That's like me saying to you: "You don't seem to realize that all MXs need to defend against huge volumes from DSL/cable spammers."
think that we are going to take the time to re-route the E-mail through another mailserver? It's a huge waste of time and resources.
If you have the time-consuming hassle of being blocked because your on a DSL/cable subnet, then relay your outbound through your IP provider.
My point was: do MX expose themselves to high-volumes of spam from DSL/cable spammers on the tiny possibility that an SME like yours (or mine) might some day send us a mail?
That way, a good company can prevent their E-mail from being caught
.... when their mail server is on DSL/cable by relaying their outbound through thier IP provider or ISP. That's the best way to avoid the hassle. And they can still receive inbound directly to DSL/cable subscriber's MX server.
This is very much like SPEWS -- they intentionally list legitimate mailservers.
Spews tries to maximize collateral damage to legit servers by blocking Class Cs that also host spammers, on the hopes that those legit clients will abandon the spammer-friendly (and spammer-paid) hosting service or network operator.
But, there are many other ways to block those 1,000 spams. And there may be 20-30 or 100 legitimate messages that you are blocking.
THEY complain, and we, always with goodwill, whitelist their IP as legit and move on.
If THEY don't like that hassle, then THEY should relay outbound through legit SMTP gateways.
So blocking DULs, as AOL and others are threatening, is effective policy.
Yes, if you like blocking legitimate E-mail.
Come on, nobody likes that, nobody wants that, everybody is ready to correct false positives.
The correct statement is "IF you like blocking highly probable, round-the-clock sources of high volumes of abuse mail, then block cable/DSL subscriber networks".
That may work for you, but it doesn't work for most.
What works for everybody is for legit DSL/cable subscribers to relay their outbound through the provider's SMTP gateway. end of problem.
If "designated mailer protocol" were implemented, then that would permit DSL/cable domains to whitelist their IPs.
Len
_____________________________________________________________________ http://MenAndMice.com/DNS-training: New York; Seattle; Chicago IMGate.MEIway.com: anti-spam gateway, effective on 1000's of sites, free
To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
