This is a new one...

----- The following addresses had permanent fatal errors -----
<norm@saxonica.com <mailto:norm@saxonica.com> >
     (reason: 550 A URL in this email (codeberg . org) is listed on 
https://spamrl.com/. Please resolve and retry)

    ----- Transcript of session follows -----
... while talking to mx10.positive-internet.com.:

DATA

<<< 550 A URL in this email (codeberg . org) is listed on 
https://spamrl.com/. Please resolve and retry
554 5.0.0 Service unavailable