I haven't been switched over to fibre yet due to config problems, but I'm trying to test port 587 using your settings. I recompiled mutt adding USE="debug gnutls". With "mutt -d 2" I get the a lot of debug output, including the following. To further complicate things, when I switch back to the old muttrc, I get something about "no From:" I had to rebuild without gnutls to get it working again. What do the last 2 lines imply?
[2024-01-18 11:36:00] Sending message... [2024-01-18 11:36:00] Looking up smtp.ebox.ca... [2024-01-18 11:36:00] Connecting to smtp.ebox.ca... [2024-01-18 11:36:00] Connected to smtp.ebox.ca:587 on fd=4 [2024-01-18 11:36:00] 4< 220 smtp.ebox.ca ESMTP Postfix (Debian/GNU) [2024-01-18 11:36:00] 4> EHLO waltdnes.org [2024-01-18 11:36:00] 4< 250-smtp.ebox.ca [2024-01-18 11:36:00] 4< 250-PIPELINING [2024-01-18 11:36:00] 4< 250-SIZE 20000000 [2024-01-18 11:36:00] 4< 250-VRFY [2024-01-18 11:36:00] 4< 250-ETRN [2024-01-18 11:36:00] 4< 250-STARTTLS [2024-01-18 11:36:00] 4< 250-ENHANCEDSTATUSCODES [2024-01-18 11:36:00] 4< 250-8BITMIME [2024-01-18 11:36:00] 4< 250 DSN [2024-01-18 11:36:00] 4> STARTTLS [2024-01-18 11:36:00] 4< 220 2.0.0 Ready to start TLS [2024-01-18 11:36:00] gnutls_handshake: A packet with illegal or unsupported version was received. [2024-01-18 11:36:02] Could not negotiate TLS connection -- Roses are red Roses are blue Depending on their velocity Relative to you