Mailbox connection fails: Connection closed (No commands sent) Help please

[Aki Tuomi]

Try https://wiki.mozilla.org/Thunderbird:Debugging

Aki

> On 08/12/2021 15:04 postfix at aecperformance.com wrote:
> 
> 
> OK I'm confused. It looks like I'm connected to the mailbox but when I try to 'Get Messages' now it says that the server has disconnected.
> In the mail.log file I see this (again):
> Dec 8 12:55:43 softlinksys dovecot: imap-login: Login: user=, method=PLAIN, rip=67.8.3.170, lip=194.163.45.150, mpid=67110, TLS, session=
> Dec 8 12:55:43 softlinksys dovecot: imap-login: Login: user=, method=PLAIN, rip=67.8.3.170, lip=194.163.45.150, mpid=67111, TLS, session=
> Dec 8 12:55:43 softlinksys dovecot: imap(smoker1 at sizzelicks.com)<67110>: Connection closed (No commands sent) in=0 out=387 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0
> Dec 8 12:55:43 softlinksys dovecot: imap(smoker1 at sizzelicks.com)<67111>: Connection closed (No commands sent) in=0 out=388 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0
> 
> Please help me.
> How can I fix this problem?
> 
> -----Original Message-----
> From: dovecot <dovecot-bounces at dovecot.org> On Behalf Of Robert L Mathews
> Sent: Tuesday, December 7, 2021 7:46 PM
> To: dovecot at dovecot.org
> Subject: Re: Mailbox connection fails: Connection closed (No commands sent) Help please
> 
> On 12/7/21 2:49 PM, Alexander Dalloz wrote:
> 
> > Use a not expired certificate.
> >
> > $ openssl s_client -connect 194.163.45.150:993
> > CONNECTED(00000003)
> > depth=3 O = Digital Signature Trust Co., CN = DST Root CA X3 verify
> > error:num=10:certificate has expired notAfter=Sep 30 14:01:15 2021 GMT
> 
> That error's happening because you (Alexander) are using an old openssl version that has the problem described on:
> 
> https://www.openssl.org/blog/blog/2021/09/13/LetsEncryptRootCertExpire/
> 
> That's not the problem that the original poster is having unless Thunderbird also has the same problem, which it may; see:
> 
> 
> https://community.letsencrypt.org/t/note-regarding-transition-to-r3-intermediate-with-firefox-or-thunderbird/140049
> 
> 
> https://www.arcanoae.com/adding-lets-encrypts-new-root-and-intermediate-certificates-to-mozilla-applications/
> 
> In any case, this works fine with OpenSSL 1.1 or later:
> 
> $ openssl s_client -connect mail.sizzelicks.com:993
> ...
> * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE
> LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot (Ubuntu) ready.
> 
> --
> Robert L Mathews, Tiger Technologies, http://www.tigertech.net/