Re: [courier-users] What is the best user-based anti-spam solution?

Mike Horwath wrote:

>On Sun, May 22, 2005 at 10:27:49AM +0200, Martijn Lievaart wrote:
>
>
>>Ah, but keep in mind that the external provider must know your valid
>>users, or you'll create backscatter. And that alone is reason for
>>blocklisting by many today. Even the popular spamcop blocklist
>>accepts backscatter as a submission criterium.
>>
>>
>
>Well, I don't know who you have used as an outsourced AS/AV company
>before, but any I have used or checked out in the past actually do
>verify remote before accepting *any* message.
>
>Be careful with your blanket statements.
>
>

Although I until now never saw one do that (and f.i. our IRS gets it
wrong, getting AV/AS from the biigest telecom provider here. But I only
said that you must not create backscatter, thank you for reitterating my
point.

M4



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