I think the microsoft outage recently forced them to tickle their middle bits. They rate limited RackSpace even the other day. This is yet another of the billion reasons why Im glad we dont host our own email
The NANOG list will probably get you contacts for resolutions On Tue, Dec 8, 2020 at 8:51 AM Nate Burke <[email protected]> wrote: > I've started having a lot of problems over the last week with my > mailserver getting blocked for Spam. I can't find any reason why, but > Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists > that I can find, MXToolbox shows it clean on all their blacklist checks, > and it's not on barracuda's list. My Mailserver traffic is normal, so I > don't' think I have any compromised accounts. > > I can't find anywhere to check/remove the Microsoft blacklist. The > Returned SMTP Messages just has a Link to their general FAQ page and a > helpful note that says 'We are blocking your email, Contact your network > administrator for assistance'. > > Going directly to Senderbase and looking up My server shows the server > clean. > > I've already told one customer to move their domain off of me, so I > don't have to answer their hourly calls wondering when it will be fixed, > and I'm getting ready to tell another to leave, since there's nothing > that I can find to fix. But it's always MY fault that someone else is > not accepting their email. It's never up to the person with the Hotmail > or Comcast account complaining to their company that they can't receive > mail from this person. > > Did something recently change with some SMTP Protocol or vague DNS check > that I missed updating that the big companies are blacklisting me now? > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
-- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
