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Re: [Asrg] 0. General - anti-harvesting (was Inquiry about CallerID Verification)

2003-11-30 17:25:28

----- Original Message ----- 

Allows me to rephrase this - This is a requirement that the receiver is
required to send the delivery failure notice back to the sender. It is
not a requirement that the address for that notice should exist and be
functional, or in your case be able to reach the RCPT TO stage.
Therefore, in practice this requirement is sometimes ignored since no
one wants to be sending email to non-existant addresses anyway, and many
filtering systems for spam will not send back a failure notice.

Yakov

Sorry, I disagree with your interpretation of the current specification.

A Mail From:  must be valid if all other RFC specifications is to fit.

Now, if it is a APPLIED in such a way that it "yields" incorrect results,
then it is NOW your job, to help developers use this failure in a functional
defined manner.

In Wildcat,  when bounce notifications fail to reach their destination after
the retries is exhausted (default is 72 attempts, 3 days, 1 per hour)  the
address is automatically BLACKLISTED (optional for admin).

The RETURN PATH: must exist, otherwise the system fails at all technical
levels.  It is for this reason, in practice, it works for compliant systems.
WCSAP is proven this.  For non-compliant systems, it is problematic.

I am failing to see why so much resistance?  All you are basically proving
is how the CURRENT specification needs to be tighten up.

If you are LOOKING for a solution that works with the current system with
all its idiosyncrasies, then you are LEFT with only one solution, and
EXTERNAL wrapper solution that is DNS based at stops entries into the
unsecured environment in the first place.

Why is so hard to see this?

---
Hector Santos
WINSERVER "Wildcat! Interactive Net Server"
support: http://www.winserver.com
sales: http://www.santronics.com



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