Re: [saag] Ubiquitous Encryption: spam filtering

[Nico Williams <[e-mail]>]

On Tue, Jun 23, 2015 at 03:19:02PM -0000, John Levine wrote:
> I can't find in the archives whether the ubiquitous encryption
> discussion has looked at the knotty issues of spam filtering.
> 
> It's a really hard problem -- filtering is essential to keep mail
> usable, both due to the sheer volume of the spam and the need to keep
> phishing and malware away from recipients.  You can do some filtering
> on the envelope, but there's no substitute for looking at the contents
> of the message.
> 
> All of the middlebox issues apply, it's much easier to do the
> filtering on a large shared server than at endpoints.  [...]

I agree.  E-mail is different from web.