On Wed, Jul 9, 2014 at 9:10 PM, Ben Reser <ben_at_reser.org> wrote:
> On 7/7/14 6:23 AM, Notes Jonny wrote:
>> Have you thought about adding [svn users] to prefix the subject of emails?
>>
>> It would make my mailbox simpler to prioritise all emails.. Currently
>> I need to read the subjects.. or implement some complex filtering to
>> folder of svn users emails..
>
> Modifying mail going to mailing lists is a very bad idea these days. It's
> becoming increasingly common for mail providers to sign mail and then publish
> DNS records that tell receivers that they can reject mail that is not properly
> signed. Modifying the mail then means these signatures no longer validate and
> the mail may be rejected.
>
> Yahoo changed their DMARC settings in April of this year to tell receivers that
> they should start rejecting mail that was not signed. This caused many mailing
> lists that are doing exactly what you suggest to start dropping mail coming
> from Yahoo users.
>
> The solutions for this as outlined here are not great:
> http://www.dmarc.org/faq.html#s_3
> http://wiki.asrg.sp.am/wiki/Mitigating_DMARC_damage_to_third_party_mail
>
> It basically comes down to:
>
> 1) Don't modify mail.
>
> 2) Start modifying the mail in more intrusive ways.
>
> At the Apache Software Foundation for lists that don't follow the first option
> they've adopted the .invalid option:
> http://wiki.asrg.sp.am/wiki/Mitigating_DMARC_damage_to_third_party_mail#Add_fixed_string_such_as_.invalid_to_addresses
>
> Which means for domains where DMARC configuration would break the mail the
> sender mail is changed to have a .invalid postfix on the sender's address. For
> example in the case of Yahoo user_at_yahoo.com.invalid
>
> This would be particularly problematic for our users@ list because often we
> have posters who are not subscribed to the list and would like to receive the
> responses back. Responders would have to pay attention to the addresses and
> fix them manually in all these cases.
>
> I don't think munging the email subject is worth dealing with that.
Hi Ben
Thank you for making these points. Unfortunately I agree that it is no
longer possible to do what I feel is the ideal solution (add an
[subversion-users] to subject).
Thanks again for providing the links
Jon
Received on 2014-07-23 07:04:58 CEST