Check if you are not an open relay. Configure SPF, DKIM, DMARC and Reverse DNS. Than contact to the spam lists. Here you can check where your IP is listed. Rgds Wesley.
On Sun, Mar 17, 2019 at 8:24 PM Erwan David <er...@rail.eu.org> wrote: > > Le 17/03/2019 à 08:44, Matthew McGehrin a écrit : > > Hi Johannes, > > > > Gone are the days of being able to send normal emails to these > > providers. They use automated algorithms that block your email > > automatically. Your IP reputation has a lot to do with it as well, > > along with the IPs in your /24. For example, looking up your IP > > reputation, I see that this /24 has several mail providers, so while > > you might not be sending the actual spam, other IPs in your /24. Also, > > forwarded email can have the same impact, as you are forwarding spam, > > and not necessarily sending it directly. > > > > See also: > > > > > https://www.talosintelligence.com/reputation_center/lookup?search=37.120.172.118 > > > > > > 37.120.172.166 mail.digi-media-net.de Yes 0.0 1.7 No Poor > > > > You might need to use one of the commercial providers, such as Amazon > > or Sendgrid, to send your outbound emails, since the large providers > > will not block them as easily. > > > > Matthew > > > > > > > > I had some problem ending emails to some businesses and found they used > MS for hosting their email system. In taht case, I always signal in the > customer satisfaction form that their email hoster destreoys the > messages sent by their customers and that made me less likely to do > business with them again. > > > -- Hello. Rgds Wesley
