[ietf-dkim] list vs contributor signatures, was Wrong Discussion

[Ian Eiloart]

--On 30 April 2010 21:45:08 -0400 "John R. Levine" <johnl at iecc.com> wrote:

>> I don't think that's what I'm saying. Currently lists don't do much to
>> authenticate senders. I don't think it's implausible that a recipient
>> might  have stricter rules than a list manager. It might be unusual, I
>> suppose.
>
> I agree it's hypothetically possible, but have you ever seen an actual
> need for this in practice, a list where the recipients filter out
> messages that a more competently managed list would have rejected?

I've seen spam posted to mailing lists. Recently, I've seen lists targetted 
in more intelligent ways by spammers. For example, by using sender 
addresses in the domain of the list (quite a useful way of attacking 
academic lists, which tend to have lots of local users, but some non-local).

> R's,
> John



-- 
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
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