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Re: Bounce/System Notification Address Verification

2005-06-29 04:53:29

On Wed June 29 2005 01:40, Robert A. Rosenberg wrote:

There is only (as I've noted in a prior message) a flaw if when 
[a] CBV probes an ISP and that ISP CBVs back in response to the 
probe, [the first sysrem] instead of accepting the CBV probe and responding 
a "Good Address" reply turns around and tries to CBV the other 
Server. It is the job of [...] CBV users [...] to recognize 
the addresses used with their CBV probes and not respond with a CBV 
probe when the address is used by another CBV system. You handle CBV 
probles triggered by your own in-flight CBV probes do not require 
your CBV code to recognize other user's CBV probe patterns (ie: you 
should just CBV respond to them).

Then it is the responsibility of the (nonexistent?) specification
authors to completely specify such behavior, and as this is clearly
an interoperability issue which if ignored can result in damage to
the mail system is needs to be specified with use of BCP 14 MUST or

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