On Sat, 29 Oct 2011, Erik Christiansen <dvalin@internode.on.net> wrote:
- The concern expressed w.r.t. gmail, yahoo, etc., presumably arises from them also munging subject lines, and therefore creating problems with signed messages, in the same way as luv-main.
Gmail and Yahoo are two mail servers that DKIM sign all outbound mail. When you munge headers you break DKIM signatures from all mail from those servers which is a significant portion of all email (note that gmail can host other domains). It's theoretically possible for someone who's mail is DKIM signed to put in the [luv-main] in the subject line themself, this could theoretically be done automatically (all you have to do is to write a milter - one of the more painful pieces of coding you're likely to do) or be done manually (or possibly through hacking your MUA configuration). But in practice it's unreasonable to expect so many people to do that - including every newbie who has a gmail account.
I'm now wondering why Russell thinks the incompatibility between all problem mailserver configurations and DKIM shouldn't be fixed, instead of shooing away a convenient work-around for the annoying clutter the mailman misconfiguration introduces.
The problem mailservers need to be fixed. Committee people, what's the delay here? Why can't you get an agreement by email and then tell Craig to implement it? -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/