On Mon 13 Mar 2017 at 11:35:31 (-0500), Charles E. Blair wrote: > I have been using claws-mail for several years. After > I changed the server used for sending mail, receiving has > continued to work but not sending. > > When I closed claws-mail after a failure, my screen > displayed > > > Warning SSL connection failed (A TLS packet with > > unexpected length was received) > > Warning couldn't start TLS session > > I reproduce below part of ./claws-mail/claws.log > > Any advice on how to fix things would be appreciated.
What was the previous server and port number that you used previously for sending? I can connect to smtp.illinois.edu on port 587 just fine, though I obviously have no login credentials (and don't want any). It looks to me as if you may be connecting unencrypted, and then trying to start TLS. I connected encrypted, received a certificate, and then I said "ehlo junk". I received: 250-smtp.illinois.edu Hello [192.17.23.217] 250-SIZE 104857600 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-AUTH GSSAPI NTLM LOGIN 250-8BITMIME 250-BINARYMIME 250 CHUNKING It seems a bit dated, having AUTH LOGIN but no PLAIN. I think that just means you send the username and password separately, rather than together in one line. > [11:12:42] * message: Account 'c-bl...@imap.illinois.edu': Connecting to SMTP > server: smtp.illinois.edu ... > [11:12:42] SMTP< 220 smtp.illinois.edu Microsoft ESMTP MAIL Service ready at > Mon, 13 Mar 2017 11:12:41 -0500 > [11:12:42] ESMTP< 250-smtp.illinois.edu Hello [192.17.23.217] > [11:12:42] ESMTP< 250-STARTTLS > [11:12:42] ESMTP> STARTTLS > [11:12:42] ESMTP< 220 2.0.0 SMTP server ready > [11:12:42] ** warning: couldn't start TLS session > [11:12:42] *** error: Error occurred while sending the message. Cheers, David.
