I can confirm this is still an issue at the moment. Same email provider requiring TLS by default, and still only happening when replying to the debuggs adress.
> <[email protected]>: TLS is required, but was not offered by host > debbugs.gnu.org[209.51.188.43] > > Reporting-MTA: dns; mout02.posteo.de > X-Postfix-Queue-ID: 90BDE1A00BC > X-Postfix-Sender: rfc822; [email protected] > Arrival-Date: Wed, 28 Dec 2022 13:44:09 +0100 (CET) > > Final-Recipient: rfc822; [email protected] > Original-Recipient: rfc822;[email protected] > Action: failed > Status: 5.7.4 > Diagnostic-Code: X-Postfix; TLS is required, but was not offered by host > debbugs.gnu.org[209.51.188.43]
