"-5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/,
high trust" fixed this problem. I now have a private DNS server.
However, spam still ends up in the inbox.
Return-Path: <
[email protected]>
Delivered-To:
[email protected]
Received: from server.server724092.com
by...