The strange thing is that the client machine and server are the same... Maybe Mut looks into the wrong place. I installed mutt from the openbsd package and using openbsd 7.1
Thanks for the help. Kind regards Wim Philipp Buehler <[email protected]> schreef op 8 juli 2022 16:31:31 CEST: >Am 08.07.2022 15:49 schrieb Dave Voutila: > >> $ openssl s_client -showcerts -servername mail.thinkerwim.org -connect >> mail.thinkerwim.org:587 > >`-starttls smtp` helps a lot. The cert is there (also on :25 ftm) and signed >by LE. > >The rub is that the mutt client machine does not know that issuer, >See openssl documentation how to do this. > >HTH >-- >pb >

