On Thursday, June 6, 2002, at 03:03  PM, Stefan Jeglinski wrote:

>>> For the acct that existed, it would reject only if you have blacklisted 
>>> 216.153.153.186. The others will still be rejected for unknown user.
>>
>>
>> well as he is now changing ip adress every 10th or so mail
>> and seems to be jumping all over the planet (how does he
>> do that?) there is no way
>> i could reasonably blacklist all these ip`s i think.
>
> True; however, with BBEdit or other it wouldn't be to hard to cull those 
> IPs on a daily basis and paste them into your static blacklist. But since 
> the spammer is not likely to be bright (by definition), there's a 
> likelihood that using an RBL, as mentioned by Craig, would catch a 
> portion of it or possibly most or all of it.
>

I would not be surprised if all (or at least many) of those IP addresses 
are actually open relays. The actual harvesting program need not directly 
contact your mail server as long as it gets the reject messages relayed 
back.


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