Hello Mailops, I have a customer that is receiving the following error message from GMX.net:
gmx.net (mxgmx016) Nemesis ESMTP Service not available No SMTP service Bad DNS PTR resource record. For explanation visit https://www.gmx.net/mail/senderguidelines?ip=XX.XXX.XXX.XXX&c=rdns But this customer's PTR records look to be in order. Does anyone have a GMX.net contact I could reach out to for more information? Thanks, Jeremy -- Mailgun <https://www.mailgun.com> | Technical Account Manager Phone: 210.384.1815 Add me on LinkedIn <https://www.linkedin.com/in/weissjeremy/>
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