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Re: [Asrg] 0. General - Inquiry about CallerID Verification

2003-11-30 14:18:22
Peter J. Holzer wrote:
On 2003-11-30 15:35:28 -0500, Hector Santos wrote:
From: "Bart Schaefer" <schaefer(_at_)brasslantern(_dot_)com>
[..]

And assuming the hypothetical ISP in the example does wait and try again,

You can't design software on the assumption that SMTP systems will not be
following specifications.


You should. Because some systems out there won't follow specifications.
You don't have to provide service to those systems (although your
customers may have different opinions about that), but when designing
the software you must consider what happens if the the other breaks the
rules.


As a matter of fact, many RFCs include sections on how to deal with violations and other "irregularities" in Internet protocols since they occur and occur pretty often. For an example, see RFC 2821, section 6.3.

Yakov


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Yakov Shafranovich / asrg <at> shaftek.org
SolidMatrix Technologies, Inc. / research <at> solidmatrix.com
"And this too shall come to pass"
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