--On Wednesday, 28 May, 2003 00:01 +0200 "Fam. van den Berg"
Just a simple question: Can spam mail be caused by violating
Michel asked what you mean by "violating". I would add, and
what do you mean by "caused"?
If I may guess at the question...
It is the case that most spam email that I've looked at recently
is non-comformant to RFC2821 in one detail or another, usually
in the order of Received fields as they try to fake those data,
rather than in the envelope (serious protocol violations in the
envelope typically result in non-delivery). But there is little
or no evidence that even optimally-positioned filters that would
reject or drop all non-conforming messages would significantly
reduce the volume of spam over any long period of time. Such
filters would also drop legitimate mail originating from at
least some versions of what are probably the two most common
desktop mail clients today (one might debate whether that would
be a good thing --it would certainly help with virus/worm
control-- but it isn't a spam issue).
The evidence is that, if it became clear that a serious effort
was developing to deploy such filters, the spammers would start
sending conforming messages more rapidly than the filters could
actually be spun up. Would this inconvenience them, or the
authors of spam tools? Yes, but almost certainly not very much
or for very long. It would, perversely, actually help the
businesses of the spam tool builders: "get your new, updated,
standards-conforming bulk mailer here and get past the new