Re: [Ietf-dkim] What makes this posting different from the original posting?

2023-08-31 Thread Bron Gondwana
On Fri, Sep 1, 2023, at 12:49, Grant Taylor wrote: > On 8/31/23 8:02 PM, Bron Gondwana wrote: > > The classic case was that spam about V*gra was very common, but blocking > > that word in every anti-spam filter would create something that was > > really not fit for purpose for Pfizer to use for

Re: [Ietf-dkim] What makes this posting different from the original posting?

2023-08-31 Thread Dave Crocker
On 8/31/2023 7:23 PM, Bron Gondwana wrote: Now - there is a fact known to my system that's not known to yours (my signed-in identity, which isn't br...@fastmailteam.com, and may not appear at all other than an opaque header that other systems can't parse).  So that's a fair call, there's

Re: [Ietf-dkim] What makes this posting different from the original posting?

2023-08-31 Thread Grant Taylor
On 8/31/23 8:02 PM, Bron Gondwana wrote: The classic case was that spam about V*gra was very common, but blocking that word in every anti-spam filter would create something that was really not fit for purpose for Pfizer to use for their email system. The sender and recipient really make a

Re: [Ietf-dkim] What makes this posting different from the original posting?

2023-08-31 Thread Bron Gondwana
On Fri, Sep 1, 2023, at 11:33, Stephen Farrell wrote: > > Hi Bron, > > On 01/09/2023 02:02, Bron Gondwana wrote: > > Fact: recipient spam filter has more information than sender spam filter > > I've no axe to grind here, but wondered - is there e.g. a > peer-reviewed publication that

Re: [Ietf-dkim] What makes this posting different from the original posting?

2023-08-31 Thread Dave Crocker
On 8/31/2023 6:02 PM, Bron Gondwana wrote: Fact: recipient spam filter has more information than sender spam filter The key bit, I think, is that more has happened, by the time of receiving.  Namely more copies sent through bots, etc. Anyhow, the limitations at the sending side is why I am

Re: [Ietf-dkim] What makes this posting different from the original posting?

2023-08-31 Thread Stephen Farrell
Hi Bron, On 01/09/2023 02:02, Bron Gondwana wrote: Fact: recipient spam filter has more information than sender spam filter I've no axe to grind here, but wondered - is there e.g. a peer-reviewed publication that conclusively demonstrates that? Not saying that that's necessary, but I

Re: [Ietf-dkim] What makes this posting different from the original posting?

2023-08-31 Thread Bron Gondwana
On Wed, Aug 30, 2023, at 12:38, Grant Taylor wrote: > On 8/29/23 3:15 PM, Steve Atkins wrote: > > Any attempt by senders to filter outbound emails based solely on > > content is going to have a lot of false negatives and positives, > > wherever you decide to draw the line. > > I find the idea