When I reply from Gmail I always have to change the address or the mail will be apparently sent to the person, not to the mailing list.
Il giorno sab 7 mar 2020 alle 14:31 Jef Driesen via subsurface < [email protected]> ha scritto: > On 7/03/2020 13:50, Christof Arnosti via subsurface wrote: > > Can you explain this a bit more? > > > > I think that DKIM / DMARC does exactly what it should: preventing > modification > > of mails with "MailFrom" from my domain on-the-fly. > > > > I also have SPF configured, which should in theory also lead to a reject > when my > > domain is used as MailFrom. > > > > With DMARC, if I understand correctly, the mail should only be threated > as > > boguous when both of these mechanisms fail at once. This is the case > when the > > subsurface-divelog.org list server modifies my mail (breaks DKIM) and > sends it > > from it own server (breaks SPF) with MailFrom ~= *@charno.ch. > > > > I understand that this leads to problems with mailing lists, but on the > other > > hand I would think that replacing the sender address by the mailing list > > software (like done now on subsurface-divelog.org) should be the right > way to > > deal with this problem. Honestly, I'm more curious about why your mail > client > > only displays the sender mail-address (but not always? The mail you > directly > > received from Benjamin seems fine?) instead of the name in the > MailFrom-Header. > > > > I think that DMARC / DKIM / SPF are a quite important tool in the fight > against > > mail spoofing, so I would hate to weaken or disable it. > > > > Can you give me some recommendation on how I should configure DMARC / > DKIM / SPF > > without breaking spoof-save mailing, but still working with mailinglists > > configured like subsurface was before? > There is an import difference between the "From" email header (which is > displayed by the mail client), and the sender/recipient address ("mail > from" and > "rcpt to") used during the smtp communication. For SPF only the latter is > relevant. So it would be perfectly possible to leave the From header > intact: > > From: Christof Arnosti <[email protected]> > > and send the mail from the subsurface domain: > > MAIL FROM: <[email protected]> > RCPT TO: <[email protected]> > > For SPF everything should be fine because the mail originates from the > subsurface mail server, and the mail client will show the correct name. Or > am I > missing something? I'm certainly not an expert on mail server > configuration, but > I do run one too. > > For DKIM/DMARC I don't really know. > > Jef > _______________________________________________ > subsurface mailing list > [email protected] > http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface >
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