Re: Imap-login bind errors after upgrading dovecot from 2.3 to 2.4

17 Dec 2025


      This is unfortunate known issue, can at the moment I can recommend either using LMTP (which is greatly preferred over lda), or you can try
!try_include /etc/dovecot/ssl.conf
and put ssl_server certificate settings to that file, and finish by chmod 0600 /etc/dovecot/ssl.conf
Aki
...
On 17/12/2025 19:30 EET onyeibo via dovecot <dovecot@dovecot.org> wrote:
I have covered some mileage. Well, It is not yet delivering but I ihink I am close.  If only I can figure out a few things like:
Dec 17 18:15:00 mail postfix/error[1551]: 157091F46D: to=<me@xxxxxxx.com>, relay=none, delay=84972883, delays=84972883/0.07/0/0, dsn=4.3.0, status=deferred (mail transport unavailable)
The above message is recurring ... a lot. Why are my mails getting deferred? Now when I reactivate dovecot-lda, the above message changes to a permission error, because LDA doesn't have the privileges to access certs. At the moment I have no entry for dovecot in /etc/postfix/master.cf (I read somewhere that it is not necessary while using lmtp). Yet somehow, dovecot appears to be absent for mail delivery.
What should I do?
...
dovecot -n
Pigeonhole version 2.4.1-4 (0a86619f)
OS: Linux 6.17.11-300.fc43.x86_64 x86_64 Fedora release 43 (Forty Three)
dovecot_config_version = 2.4.1
auth_debug = yes
auth_mechanisms = plain login
dovecot_storage_version = 2.4.1
first_valid_uid = xxxx
mail_driver = maildir
mail_home = /home/mails/%{user | domain}/%{user | username}
mail_path = %{home}/Maildir
mail_privileged_group = mail
passdb_default_password_scheme = BLF-CRYPT
protocols {
imap = yes
lmtp = yes
sieve = yes
}
sql_driver = pgsql
ssl = required
ssl_cipher_list = PROFILE=SYSTEM
pgsql localhost {
parameters {
dbname = postfix
password = xxxxxxx
user = postfix
}
}
passdb sql {n
query = SELECT username AS user, password FROM mailbox WHERE username = '%{user}' AND active='1'
}
userdb sql {
query = SELECT '/home/mails/' || maildir AS home, xxxx as uid, xxxx as gid FROM mailbox WHERE username = '%{user}' AND active = '1'
}
namespace inbox {
inbox = yes
mailbox Drafts {
auto = create
special_use = "\\Drafts"
}
mailbox Junk {
auto = create
special_use = "\\Junk"
}
mailbox Trash {
auto = create
special_use = "\\Trash"
}
mailbox Sent {
auto = create
special_use = "\\Sent"
}
mailbox "Sent Messages" {
special_use = "\\Sent"
}
}
service lmtp {
executable = lmtp -L
process_min_avail = 5
user = vmail
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0600
user = postfix
}
}
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0600
user = postfix
}
}
service stats {
unix_listener stats-reader {
group = vmail
mode = 0660
user = vmail
}
unix_listener stats-writer {
group = vmail
mode = 0660
user = vmail
}
}
ssl_server {
cert_file = /etc/letsencrypt/live/xxxxxxx.com/fullchain.pem
dh_file = /etc/dovecot/dh.pem
key_file = /etc/letsencrypt/live/xxxxxxx.com/privkey.pem
prefer_ciphers = server
}
protocol lmtp {
info_log_path = /var/log/lmtp/dovecot-lmtp.log
mail_plugins {
sieve = yes
}
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
}
service managesieve {
}
protocol sieve {
managesieve_implementation_string = Dovecot Pigeonhole
}
sieve_script personal {
active_path = ~/.dovecot.sieve
path = ~/sieve}
Regards
Onyeibo

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Re: Imap-login bind errors after upgrading dovecot from 2.3 to 2.4

Aki Tuomi

Pigeonhole version 2.4.1-4 (0a86619f)

OS: Linux 6.17.11-300.fc43.x86_64 x86_64 Fedora release 43 (Forty Three)