On Sun, Dec 14, 2025 at 12:33:37PM +0100, Tassilo Philipp wrote: > I just did a cursory review of your log, but it looks to me that it simply > cannot connect to your endpoint. So the culprit is probably not smtpd, after > all. > > Can you actually reach that endpoint? Like maybe try manually from the > source server with e.g.: telnet -6 blackblock.22decembre.eu 10027 > > Does it even connect?
This has been tested earlier in the thread, and it connected successfully at the TCP/IP level. Even the STARTTLS negociation seemed OK when testing with openssl s_client. Source IP is the same, cert seems OK, etc, etc.
