mxtoolbox is a great tool to see almost all blacklists on your ips, as Luciano mentioned, but yahoo doesn't report their own blacklists so that tool can only tell you if the ips have been blacklisted in other places. TSS09 is the same as yahoo's old TS03 which is a permanent block as the message tells you, along with the 500+ error code meaning it's not temporary. I don't think yahoo would remove it, they may, but isn't worth the trouble in my opinion, they will likely not tell you much except keep linking a best practices web page even after you keep repeating that you just got the ips (or anything else you say). I have dealt with this myself before, if they do end up helping you I would be interested in hearing the process, but just try to get new ips, whether you change providers or not.
I can tell you there is no service anywhere that can help you and that no one on this list can either. It has nothing to do with your dns setup or the email you send, ips were blocked before you got them, and yahoo doesn't listen to you because they have no way of knowing if you are the same mailer who was blocked claiming the same story. not all ips on the /24 may be blocked so if you are stuck with these ips test them all, but I would replace that entire /24 if you can as the reputation of that subnet has already been ruined. Paul On Wed, Jan 30, 2019 at 12:55 PM Robert Mann <[email protected]> wrote: > > Even though this is not a postfix specific issue I was hoping someone in the > community could help with this issue. > > We recently changed IP addresses as we purchased a /24 to use as we plan to > move Internet service provides in the near future. > > Once we did this we now get the following from yahoo.com when trying to send > email to anyone on their system. > > [email protected]: host mta7.am0.yahoodns.net[67.195.229.59] said: 553 5.7.2 > [TSS09] All messages from x.x.x.x will be permanently deferred; > Retrying will NOT succeed. See > https://help.yahoo.com/kb/postmaster/SLN3436.html (in reply to MAIL FROM > command) > > We have insured that we have forward and reverse dns setup correctly. We do > DMARC, DKIM and SPF for the email we send out. > > I have sent several requests via the yahoo postmaster portal to resolve this > but it has been weeks now with no resolution. The portal is more for > yahoo.com users and not bulk email senders like us. > > We don't send spam or marketing emails. We do have websites that send out > newsletters, alerts and business email. > > Does anyone have any ideas or suggestions or even know of a service that can > help with these types of issues? > >
