Re: [Exim] Yahoo and sender verification callout

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Συντάκτης: Suresh Ramasubramanian
Ημερομηνία:  
Προς: exim-users@exim.org
Αντικείμενο: Re: [Exim] Yahoo and sender verification callout
On Thu, May 22, 2003 at 07:37:50AM +0100, Giuliano Gavazzi wrote:
> I don't know how common is that a dictionary attack will also
> randomly change the sender local part. I haven't seen it yet. So, if
> it does not change, all you'll see is one callback per attacked host.


I saw one recently - used the popular smtp load testing tool "postal" to
generate dictionary attacks on our servers.