Re: several messages

[Pekka Savola <[e-mail]>]

On Fri, 14 Nov 2008, Chris Lewis wrote:
>> DNSBL system is organized to send NDNs rather than rejecting
>> messages or because there are relays (including SMTP-handling
>> firewalls) involved -- things are basically hopeless because the
>> number of mailing list servers that are able to accept NDN
>> messages, correlate them with particular addresses on particular
>> mailing lists, and take action on that basis is, well, small.
>
> I don't agree.  In fact, most ESPs, Yahoo, and many common list
> implementations (eg: mailman and I believe LISTSERV) have and use this
> capability now.  With ESPs, for list pruning.  At times, I've become
> quite familiar with Yahoo's "your subscription bounced too often, I've
> unsubscribed you, here's how to resubscribe, and <here> is your missed
> messages".  Annoying, but no great harm.  Hasn't caused me to change how
> the filters that caused those bounces work.

FWIW, on one mailman mailing-list, I've received the following a 
couple of times; I've not received it on others, which may mean that 
those lists don't enable it, or that the mails on those lists have not 
triggered rejections.  I suspect the former.

"Your membership in the mailing list FOO has been disabled due
to excessive bounces The last bounce received from you was dated
24-Jul-2008.  You will not get any more messages from this list until
you re-enable your membership.  You will receive 3 more reminders like
this before your membership in the list is deleted.
... [what follows is the URL to re-enable membership immediately] "

I have found this message incredibly helpful, and I'd like to see a 
wider application of similar behaviour.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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