[OS X TeX] junk

[Fredrik Wallenberg]

Most lists (I don't remember if that is true for this one) requires a  
return email to confirm the subscription.

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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