On 10/27/22 15:11, Wolfgang Pfeiffer wrote:
Received: from
pop.gmx.net [212.227.17.185]
by aw17 with POP3 (fetchmail-6.4.31)
for <[deleted local user name]@localhost> (single-drop); Wed, 26
Oct 2022 20:13:48 +0200 (CEST)
Received: from
EUR04-HE1-obe.outbound.protection.outlook.com
([40.92.73.83])
by
mx-ha.gmx.net (mxgmx105 [212.227.17.5]) with ESMTPS (Nemesis) id
1MRVu9-1oSUk40C4j-00NTdY for <roto(a)gmx.net>; Wed, 26 Oct 2022 19:47:01
+0200
This undeliverable message is coming from
outlook.com, not the mailing list.
Diagnostic information for administrators:
Generating server:
PR3P189MB1017.EURP189.PROD.OUTLOOK.COM
y.antoniowatson(a)gmail.com
Remote Server returned '550-5.7.26 The MAIL FROM domain [
gmx.net] has an
SP=
F record with a hard fail 550-5.7.26 policy (-all) but it fails to pass
SPF=
checks with the ip: 550-5.7.26 [104.47.13.56]. To best protect our
users f=
rom spam and phishing, 550-5.7.26 the message has been blocked. Please
visi=
t 550-5.7.26
https://support.google.com/mail/answer/81126#authentication
fo=
r more 550 5.7.26 information.
r20-20020a05640251d400b0045d4b7ad162si680198=
1edd.546 - gsmtp'
This is the problem. The server either doesn't like the SPF policy or
the received message fails the SPF policy. Maybe the mailing list
admins will have to add
gmx.net to the list of hidden senders.