[SpamCop-List] Re: Backscatter

[Miss Betsy]

"Mike Easter" <MikeE at ster.invalid> wrote in message
news:dcingi$umg$1 at news.spamcop.net...
> Peter Gradwell wrote:
>
> > Presumably, it is acceptable to scan the mail during the SMTP
session
> > and to generate an smtp rejection along the lines of:
> >
> > 550 "Mail Rejected. Click http://www.gradwell.com/cr/1234 to
> > whitelist"
> >
> > Which could then add you to my whitelist and deliver the email
to me.
>
> Rejecting with a link would be just fine, ie it is not abusive
> whatsoever, as opposed to the challenges.  It might not 'work' as
> expected for some automated or nonhuman senders, such as a
typical
> mailing list.  The mailing list demon would probably interpret
the
> result as a regular bounce, the same as 'no such user' or even
'mailbox
> full'.

But that wouldn't matter since, presumably, he signed up for the
mailing list and has it on his whitelist already.  And mailing
lists don't change without warning subscribers because so many
people do have whitelists.

Miss Betsy