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Makes sense. Until SMTP is authenticated cryptologically it is difficult to prevent this.
>David McFadzean wrote:
>> At 05:53 PM 8/19/98 -1000, James Wilson wrote:
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>> >Hash: SHA1
>> >If the list admin can't keep spam from unsubscribed persons off
>> >list, is it possible to keep this troll off?
>> Is everything posted from an unsubscribed address to be considered
>> If so, it is easy enough to block that from the list.
>I would doubt that very much. If the list of email addresses
subscribed to a
>list is available the spam can be made to look like it is coming
>list but bypasses it altogether and simply spoofs the addresses to
>it came from the list. Most will be none the wiser and in fact the
>owner can be made to look like a supporter of the spam. I mention
>because I saw it happen recently on the wholesys-list and really felt
>for the list owner who had no control over the situation.
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