Latest dovecot does not work with latest MUA (thunderbird)

[lja@koti]

Hi,

Latest dovecot does not work with latest thunderbird. It does not react 
to sent emails.

They are put to maildir by postfix a-ok.

The version of thunderbird that works ok: 68.12.1


Distro:

Distributor ID: Ubuntu
Description:    Ubuntu 20.04.2 LTS
Release:        20.04
Codename:       focal


$ dovecot -n
# 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.7.2 ()
# OS: Linux 5.9.0-rc5 x86_64 Ubuntu 20.04.2 LTS
# Hostname: superman.sillywalk.org
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = plain
debug_log_path = /var/log/dovecot-debug.log
info_log_path = /var/log/dovecot-info.log
log_path = /var/log/dovecot.log
mail_debug = yes
mail_location = maildir:~/Maildir/
mbox_write_locks = fcntl
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
}
protocols = imap pop3
service auth {
   unix_listener /var/spool/postfix/private/auth {
     group = mail
     mode = 0660
     user = postfix
   }
}
ssl_cert = </etc/letsencrypt/live/lja.fi/fullchain.pem
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
userdb {
   driver = passwd
}
protocol imap {
   imap_metadata = yes
}
local_name paxsudos.fi {
   ssl_cert = </etc/letsencrypt/live/somethingB.fi/fullchain.pem
   ssl_dh = # hidden, use -P to show it
   ssl_key = # hidden, use -P to show it
}
local_name paxsudos.com {
   ssl_cert = </etc/letsencrypt/live/somethingB.com/fullchain.pem
   ssl_dh = # hidden, use -P to show it
   ssl_key = # hidden, use -P to show it
}
local_name lja.fi {
   ssl_cert = </etc/letsencrypt/live/somethingA.fi/fullchain.pem
   ssl_dh = # hidden, use -P to show it
   ssl_key = # hidden, use -P to show it
}


-- 
<https://paxsudos.com/> 	

  ,-- Information --------------------------------------------------------  ------ ---  -- -
  | Lauri Jakku
  | Contact:
  |     Phone: +358 40 220 3910
  |     Address: Puusepänkatu 1 A 3, 90130 Oulu, Finland
  '--------------- --------   -----    -----   -------      ----       ---     --

Firmani, Paxsudos IT, kautta olen jättämässä oman, vaikka pienen, jäljen 
ympäristötekoina, että tulevaisuudessakin voimme nauttia luonnosta.

Ympäristö ja luonto on sellaista joita otamme itsestäänselvyyksinä, tuon 
takia on käymässä niin että havahdumme kun on tilanne erittäin huono.

	We offset our carbon footprint via Ecologi 
<https://ecologi.com/paxsudosit>


,-- Virus scan done for content --------------------------------------------------------  ------ ---  -- -
| Known viruses: 10722370
| Engine version: 0.102.4
| Scanned directories: 0
| Scanned files: 1
| Infected files: 0
| Data scanned: 0.01 MB
| Data read: 0.01 MB (ratio 1.00:1)
| Time: 16.864 sec (0 m 16 s)
'--------------- --------   -----    -----   -------      ----       ---     --
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