Why so much Hotmail spam lately (was Re: [Mimedefang] Adding support for learning our addresses)

[WBrown at e1b.org]

DFS wrote on 01/31/2006 09:57:58 AM:

> Replying to myself...
> 
> I think the reason lots of spammers are abusing Hotmail is this
> note in our incident report:
> 
>      SPF query returned 'pass'

But wouldn't it be in Microsoft's best interest to prevent their servers 
from being used to spam?  Even from the economic standpoint of reducing 
the load/number of servers required.  Not to mention protecting their 
reputation?  Run outbound mail through the same tests they use for MSN, or 
isn't filtering that very good?

It would seem that they would see high levels of traffic coming from bots 
that they could throttle/reject.