[OS X TeX] junk
Fredrik Wallenberg
fwallenberg at mac.com
Thu Aug 26 01:51:26 CEST 2004
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Fredrik
On Aug 25, 2004, at 18:37, Ross Moore wrote:
>
> On 26/08/2004, at 8:38 AM, Matthias Damm wrote:
>
>>
>> Am 25.08.2004 um 23:31 schrieb Stephan Hochhaus:
>>
>>> Is it possible to adjust the mailing-list software so that a user
>>> who obviously spams the list is blocked until he contacts a list
>>> admin? The trigger could be a number of x messages in a given amount
>>> of time. Let's say a sender lets 10 mails lose on the list within
>>> two minutes (hoping that noone here can type that fast)
>>
>> It might be hard to find a proper solution here (x mails in y minutes
>> might not work too well, since people with dialup-connections or with
>> mobile computers might write a number of mails and send them later at
>> once), but I am sure that there are solutions here.
>
> There is a low-tech way of guarding against this, that I use on
> another list:
>
> ** moderate the subscription requests **
>
> An address like garbage at 4readers.com should raise alarm bells.
> I'd refuse to let it join until a proper name or affiliation
> was provided to satisfy me that there was a person there,
> with a legitimate interest.
>
> Yes, this means that it can take awhile before a legitimate user
> is allowed to join, but in practice this is rarely more than a few
> hours.
>
>
> An alternative is to allow the suspicious name to join the list,
> but with moderated postings initially.
>
> Mailman allows these options.
>
> It doesn't have any features based upon the frequency of posting,
> though.
>
>
>
>>
>>> OR a sender sends ten messages with the same bodytext the block
>>> becomes active.
>>> Any thoughts on such a solution in order to avoid 1200+ mails
>>> spamming every subscriber?
>>
>> A solution might include simply delaying postings of possible
>> mailing-list-flooders longer and longer the more postings they are
>> sending. If somebody sends really many postings, the delay might
>> raise to some hours or something. This reduces the negative effect
>> for dial-up users (their postings will be processed, but only some
>> time later), but although some postings might make it on the list in
>> the first place, but a catastrophe like the one we have seen cannot
>> happen.
>
>
>
>> btw: Although the effect of the flooding was quite bad already (see
>> the posting from several people to the list), we still were lucky: It
>> were some 2200 messages, but each of them was rather small. Just
>> imagine if, just for example, the auto-responder would have included
>> a copy of the original message in every new message. Or if it would
>> not have been August, and there would have been not 10 but 100
>> messages to the list in the loop!
>
> Yes, it could have been much worse than it was.
>
>
> Cheers,
>
> Ross
>
>
>
>>
>> Best,
>> Matthias
>>
>> --
>> Matthias Damm
>> mad at macpla.net
>> PGP key: http://macplanet.macbay.de/MatthiasDamm.asc
>> PGP fingerprint: CED3 6074 7F7D 3148 C6F3 DFF2 05FF 3A0B 0D12 4D41
>>
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>>
> -----------------------------------------------------------------------
> -
> Ross Moore ross at maths.mq.edu.au
> Mathematics Department office: E7A-419
> Macquarie University tel: +61 +2 9850
> 8955
> Sydney, Australia fax: +61 +2 9850
> 8114
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