On Wed, 2015-07-29 at 14:56 -0400, Joshua Judson Rosen wrote: > > Might be we should setup DKIM on the GNHLUG server. Anyone know > how > > to do that, and have the time? CentOS 5.x, Sendmail, and GNU > Mailman. > > I could, but I don't think it's actually meaningful to "set up DKIM" > for a mailing-list: the domain in the "From:" header in the message > is that one that requests (or doesn't request) DKIM verification > and specific failure-handling via either ADSP (old) or DMARC (newer); > the subscribers' original sending servers have already inserted > their own DKIM signatures for the ultimate receiving servers to check. > The only reason for the list sever to check the signatures itself > would be for it to throw mail away instead of relaying it; > and there's probably not much point in the list adding its own > signatures. > > Unless you want to emulate what the yahoos at Yahoo! did > and make the mailing list actually pretend that it's > actually the original author all of the mail that passes through > it.... > > The (non-yahoo) way you'd make the list comply with senders' > overzealous signing > is to just restrict the parts of the message the the list munges-- > e.g.: don't modify the "Subject:" header with the list-name > (and we're already not-doing that), and don't add the helpful > footer to the end of the message-body (but continuing to add > the helpful "List-*:" headers should be fine).
DKIM fouled up a list I manage when the sender was @comcast.com or @yahoo.com. mailman broke the signatures and people using comcast and yahoo could not receive the messages. My fix in /etc/mailman/mm_cfg.py #~ DKIM Handling #~ set up allow author is list REMOVE_DKIM_HEADERS = 1 ALLOW_FROM_IS_LIST = Yes DEFAULT_FROM_IS_LIST = 1 Now all the emails are getting delivered. I do NOT claim this is better than the earlier advice, merely that this got email flowing again. -- Lloyd Kvam Venix Corp DLSLUG/GNHLUG library http://dlslug.org/library.html http://www.librarything.com/catalog/dlslug http://www.librarything.com/catalog/dlslug&sort=stamp http://www.librarything.com/rss/recent/dlslug _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
