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
with
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
MUST NOT.