dpdns.org listed on Spamhaus DBL causing email delivery failure

[tswnba1-web]

Hello DigitalPlat team,

My domain is:

tswnba1.dpdns.org

I use this domain with OquMail for email service.

My outgoing emails to Microsoft Outlook are being rejected with:

550 5.7.1 Service unavailable, MailFrom domain listed in Spamhaus
(S8002)

I checked Spamhaus and it shows:

dpdns.org — listed in Spamhaus Domain Blocklist (DBL)

This is preventing my email address from sending mail to Outlook recipients.

Could you please investigate the Spamhaus DBL listing for dpdns.org and, if appropriate, contact Spamhaus to request delisting?

Thank you.