List Spam Filtering

RW rwmaillists at googlemail.com
Sun May 19 01:33:54 UTC 2013


On Fri, 17 May 2013 09:15:35 -0400
Jerry wrote:

> On Fri, 17 May 2013 14:03:01 +0100
> RW articulated:
> 
> > On Fri, 17 May 2013 08:45:29 -0400
> > Jerry wrote:
> > 
> > > On Fri, 17 May 2013 13:19:32 +0100
> > > RW articulated:
> > > 
> > > > On Fri, 17 May 2013 12:54:29 +0100
> > > > Bruce Cran wrote:
> > > > 
> > > > > Yes, seriously.  Have you seen the number of people who post
> > > > > messages "PLEASE REMOVE ME FROM THIS MAILING LIST!!",
> > > > > apparently not understanding how to manage their subscription?
> > > > 
> > > > There's also the likelyhood that reluctant subscribers are less
> > > > likely to take care about avoiding various types of backscatter.
> > > 
> > > Well, unless the reluctant subscriber is running an incorrectly
> > > configured MTA, I don't see a problem with "backscatter". Now, if
> > > they do have a maladjusted MTA, they have more problems then just
> > > subscribing to a list.
> > 
> > Out of Office replies, sieve rejects, anti-spam challenges etc
> 
> Yes, an incorrectly configured MTA or one of its milters. 

Not especially

> There are
> ways to deal with these assholes. 

Only some of it, and there's no general way of dealing with the
out-of-list component.

> Allowing a blanket "open-door"
> policy is like setting file permissions on everything to 0777 just
> because you are to lazy to find a correct solution to a problem.

Actually requiring subscription is pretty much like setting  0777, it's
really only a protection against accidental list spamming. If a spammer
actually wanted to spam lists he could harvest subscribed addresses, or
simply subscribe. 


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