Re: Detecting Valid Message Replies

2017-01-03 Thread mattg
On 1/3/2017 12:17 PM, Dave Funk wrote:
> That would make the wrong decision in the following scenario:

Well it's not my decision.  I was simply pointing out, as you are, that
merely keeping track of outgoing messages IDs, and blacklisting based on
unknown message IDs, is prone to problems.  You have provided another
example to this effect.  I'm sure there are others.




Re: Detecting Valid Message Replies

2017-01-03 Thread mattg
On 1/3/2017 8:12 AM, Christoffer G. Thomsen wrote:
> blacklist or increase score for mails that reply to unknown 
> message IDs.

Remember that someone out in the world might do a "Reply all" to a
message which was also Cc'd to one of your users.  This would show up as
an unknown message ID.  Of course,to remedy this, you could also keep
track of incoming message IDs.