Altan,
I checked the mailing list subscription and your setup looks correct as compared to mine..
Also checked the server /var/log/mail file and am seeing the mail is being sent to you - you can see it in the text file I sent only to you - assuming you even receive it. Basically the message being sent looks like:
2025-04-26T21:40:29.056032+02:00 v22018103128575622 postfix/smtp[2342]: 482BC31E1F2E: to=<
altan@wanadoo.fr>, relay=
smtp-in.orange.fr[80.12.26.32]:25, delay=3.8, delays=0.02/0.25/ 3.2/0.3, dsn=2.0.0, status=sent (250 2.0.0 8lNxuWuVPfnAC8lO0utjKd mail accepted for delivery)
Mail message being sent to me and others looks like:
2025-04-26T21:40:26.960704+02:00 v22018103128575622 postfix/smtp[2316]: 400D931E1F2D: to=<
phylsmith2004@yahoo.com>, relay=
mta6.am0.yahoodns.net[98.136.96.76]:25, delay=1.7, delays=0.03/0.11/0.68/0.88, dsn=2.0.0, status=sent (250 ok dirdel 2/2)
The only notable difference between them is in your case the "mail accepted for delivery" as part of the "status-sent"