Fatal: master: service(imap): child 1288 killed with signal 6

[fugee ohu]

Nov 25 11:14:21 mail dovecot: master: Dovecot v2.3.7.2 (3c910f64b)
starting up for imap, lmtp, sieve, pop3, submission (core dumps
disabled)
Nov 25 11:14:27 mail dovecot: imap-login: Login: user=<hidden>,
method=PLAIN, rip=71.190.227.103, lip=45.79.79.188, mpid=8457, TLS,
session=<D6zMRJ/RZL1HvuNn>
Nov 25 11:14:34 mail dovecot: imap-login: Disconnected (no auth
attempts in 1 secs): user=<>, rip=71.190.227.103, lip=45.79.79.188,
TLS handshaking: SSL_accept() failed: error:14094416:SSL
routines:ssl3_read_bytes:sslv3 alert certificate unknown: SSL alert
number 46, session=<H4QtRZ/REodHvuNn>
Nov 25 11:14:34 mail dovecot: imap-login: Disconnected (no auth
attempts in 0 secs): user=<>, rip=71.190.227.103, lip=45.79.79.188,
TLS handshaking: SSL_accept() failed: error:14094416:SSL
routines:ssl3_read_bytes:sslv3 alert certificate unknown: SSL alert
number 46, session=<lQwyRZ/RE4dHvuNn>

On Thu, Nov 25, 2021 at 3:30 AM Aki Tuomi <aki.tuomi at open-xchange.com> wrote:
>
> Can you provide also the line before it? Core dump would not hurt either.
>
> Aki
>
> > On 25/11/2021 09:00 fugee ohu <fugee279 at gmail.com> wrote:
> >
> >
> > This error appears in mail.log repeatedly after dovecot startup Notice
> > the 777 mode for service auth I set that myself
> > # doveconf -n
> > # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf
> > # Pigeonhole version 0.5.7.2 ()
> > # OS: Linux 5.14.17-x86_64-linode150 x86_64 Ubuntu 20.04.3 LTS
> > # Hostname: mail.servicemouse.com
> > auth_verbose = yes
> > mail_privileged_group = mail
> > managesieve_notify_capability = mailto
> > managesieve_sieve_capability = fileinto reject envelope
> > encoded-character vacation subaddress comparator-i;ascii-numeric
> > relational regex imap4flags copy include variables body enotify
> > environment mailbox date index ihave duplicate mime foreverypart
> > extracttext
> > namespace inbox {
> >   inbox = yes
> >   location =
> >   mailbox Drafts {
> >     special_use = \Drafts
> >   }
> >   mailbox Junk {
> >     special_use = \Junk
> >   }
> >   mailbox Sent {
> >     special_use = \Sent
> >   }
> >   mailbox "Sent Messages" {
> >     special_use = \Sent
> >   }
> >   mailbox Trash {
> >     special_use = \Trash
> >   }
> >   prefix =
> > }
> > passdb {
> >   driver = pam
> > }
> > plugin {
> >   sieve = file:~/sieve;active=~/.dovecot.sieve
> > }
> > protocols = " imap lmtp sieve pop3 submission"
> > service auth {
> >   unix_listener /var/spool/postfix/private/auth {
> >     group = postfix
> >     mode = 0777
> >     user = postfix
> >   }
> > }
> > ssl_cert = </etc/letsencrypt/live/mail.servicemouse.com/fullchain.pem
> > ssl_client_ca_dir = /etc/letsencrypt/live/mail.servicemouse.com
> > ssl_dh = # hidden, use -P to show it
> > ssl_key = # hidden, use -P to show it
> > submission_relay_host = 127.0.0.1
> > submission_relay_ssl = starttls
> > submission_relay_trusted = yes
> > userdb {
> >   driver = passwd
> > }