I am not familiar with the error message, but you might want to submit your sending IP address here: https://abuse.vadesecure.com/ and see that results in you getting any sort of useful reply.
Cheers, Al Iverson On Wed, Jun 17, 2020 at 2:40 PM Russell Clemings via mailop <mailop@mailop.org> wrote: > > host mx03.oxsus-vadesecure.net [147.135.97.26] > SMTP error from remote mail server after end of data: > 550 5.7.1 Message rejected - OXSUS0001_507 > > Anyone know what this means? (Besides the obvious.) Googling "OXSUS0001_507" > yields nothing. It's coming from mail sent to Earthlink.net and related > domains: jps.net, mindspring.com, netcom.com so far. Just > > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- Al Iverson // Wombatmail // Chicago Song a day! https://www.wombatmail.com Deliverability! https://spamresource.com And DNS Tools too! https://xnnd.com _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
