[Operators] DNSBLs

Dave Cridland dave at cridland.net
Sun Nov 15 06:26:50 CST 2009

------- Original message -------
> From: Evgeniy Khramtsov <xramtsov at gmail.com>
> Sent: 15/11/'09,  5:27
> Norman Rasmussen wrote:
>> XMPP validates the sending server via tls and/or dns (dial-back), so it
>> removes many of the unauthenticated problems of SMTP.
> Sure, but the domain is untrusted even if validated. BTW, we don't 
> validate c2s-connections.

Right, we authenticate, whereas SMTP cannot, but we don't authorize 
specially for a domain. We also authenticate c2s, and we (should) have lots 
of authorization there.


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