Kammen van, Marco, Springer SBM NL a écrit : > Hi All, > > > > We recently took over a company that used SPF. > > Because our e-mail infra is way more complicated than theirs and we have > tons of external parties who send mails using our domains, we decided > long ago not to use SPF. > > > > Now they say that %5 of their mailings don’t arrive at customers > anymore, and say this is because we removed their SPF records.. >
it may be simply because their mail is getting out from "new" IPs. you can do a test by setting up SPF and trying... in short, if the IPs they used to send from have acquired some reputation, then sending via new IPs will lose that reputation. > I’m no expert on SPF but as far as I understand it only checks if a > sender is ‘allowed’ to send using that domain, so no relation what so > ever on dropping mail from parties that don’t use SPF… in theory, yes. but... > Or am I missing something? >
