-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 During some errors with domain dovecot.org, I didn't receive any answer.
So here is output of dovecot -n first_valid_uid = 420 info_log_path = /var/log/dovecot/dovecot.log lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes log_path = /var/log/dovecot/errors.log mail_plugins = " zlib expire acl" 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 ihave namespace { inbox = no list = children location = maildir:/home/vpopmail/Public/Maildir prefix = Shared. separator = . subscriptions = yes type = shared } namespace { hidden = no inbox = yes list = yes location = mailbox Junk { auto = create special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = INBOX. separator = . subscriptions = yes type = private } passdb { driver = vpopmail } plugin { acl = vfile expire = INBOX.Trash expire2 = INBOX.Spam expire3 = INBOX.Junk quota = maildir quota_rule2 = INBOX.Trash:ignore quota_rule3 = INBOX.Sent:ignore sieve = ~/Maildir/sieve/dovecot.sieve sieve_after = ~/Maildir/sieve/01_vacation.sieve sieve_before = /etc/dovecot/sieve/global.sieve sieve_dir = ~/Maildir/sieve sieve_global_dir = /etc/dovecot/sieve/ sieve_quota_max_scripts = 50 zlib_save = bz2 } protocols = imap sieve pop3 service anvil { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = anvil extra_groups = group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 1 protocol = service_count = 0 type = anvil unix_listener anvil-auth-penalty { group = mode = 0600 user = } unix_listener anvil { group = mode = 0600 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service auth-worker { chroot = client_limit = 1 drop_priv_before_exec = no executable = auth -w extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 1 type = unix_listener auth-worker { group = mode = 0600 user = $default_internal_user } user = vsz_limit = 18446744073709551615 B } service auth { chroot = client_limit = 4096 drop_priv_before_exec = no executable = auth extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener /var/run/auth-master { group = vchkpw mode = 0660 user = vpopmail } unix_listener /var/run/private/auth { group = mode = 0666 user = } unix_listener auth-client { group = mode = 0600 user = } unix_listener auth-login { group = mode = 0600 user = $default_internal_user } unix_listener auth-master { group = mode = 0600 user = } unix_listener auth-userdb { group = mode = 0600 user = } unix_listener login/login { group = mode = 0666 user = } user = dovecot vsz_limit = 8 G } service config { chroot = client_limit = 0 drop_priv_before_exec = no executable = config extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = config unix_listener config { group = mode = 0600 user = } user = vsz_limit = 18446744073709551615 B } service dict { chroot = client_limit = 1 drop_priv_before_exec = no executable = dict extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = unix_listener dict { group = mode = 0666 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service director { chroot = client_limit = 0 drop_priv_before_exec = no executable = director extra_groups = fifo_listener login/proxy-notify { group = mode = 00 user = } group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener director-admin { group = mode = 0600 user = } unix_listener login/director { group = mode = 00 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service dns_client { chroot = client_limit = 1 drop_priv_before_exec = no executable = dns-client extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = unix_listener dns-client { group = mode = 0666 user = } unix_listener login/dns-client { group = mode = 0666 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service doveadm { chroot = client_limit = 1 drop_priv_before_exec = no executable = doveadm-server extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 1 type = unix_listener doveadm-server { group = mode = 0600 user = } user = vsz_limit = 18446744073709551615 B } service imap-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = imap-login extra_groups = group = idle_kill = 0 inet_listener imap { address = 0.0.0.0 port = 143 ssl = no } inet_listener imaps { address = 0.0.0.0 port = 993 ssl = yes } privileged_group = process_limit = 128 process_min_avail = 3 protocol = imap service_count = 1 type = login user = dovecot vsz_limit = 64 M } service imap { chroot = client_limit = 1 drop_priv_before_exec = no executable = imap extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 50 type = unix_listener login/imap { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service lmtp { chroot = client_limit = 0 drop_priv_before_exec = no executable = lmtp extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = lmtp service_count = 0 type = unix_listener lmtp { group = mode = 0666 user = } user = vsz_limit = 0 } service log { chroot = client_limit = 0 drop_priv_before_exec = no executable = log extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = log user = vsz_limit = 18446744073709551615 B } service managesieve-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = managesieve-login extra_groups = group = idle_kill = 0 inet_listener sieve { address = port = 4190 ssl = no } privileged_group = process_limit = 128 process_min_avail = 3 protocol = sieve service_count = 1 type = login user = dovecot vsz_limit = 64 M } service managesieve { chroot = client_limit = 1 drop_priv_before_exec = no executable = managesieve extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = sieve service_count = 1 type = unix_listener login/sieve { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service pop3-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = pop3-login extra_groups = group = idle_kill = 0 inet_listener pop3 { address = 0.0.0.0 port = 110 ssl = no } inet_listener pop3s { address = 0.0.0.0 port = 995 ssl = yes } privileged_group = process_limit = 128 process_min_avail = 3 protocol = pop3 service_count = 1 type = login user = dovecot vsz_limit = 64 M } service pop3 { chroot = client_limit = 1 drop_priv_before_exec = no executable = pop3 extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1024 process_min_avail = 0 protocol = pop3 service_count = 50 type = unix_listener login/pop3 { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service ssl-params { chroot = client_limit = 0 drop_priv_before_exec = no executable = ssl-params extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = startup unix_listener login/ssl-params { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } ssl_cert = </var/qmail/control/servercert.pem ssl_cipher_list = ALL:!LOW:!SSLv2 ssl_key = </var/qmail/control/servercert.pem userdb { args = quota_template=quota_rule=*:backend=%q driver = vpopmail } verbose_proctitle = yes verbose_ssl = yes protocol imap { imap_max_line_length = 64 k mail_plugins = quota imap_quota zlib imap_zlib acl imap_acl expire } protocol pop3 { mail_plugins = quota pop3_no_flag_updates = no pop3_uidl_format = %v-%u } protocol sieve { managesieve_logout_format = bytes ( in=%i : out=%o ) } protocol lda { auth_socket_path = /var/run/auth-master info_log_path = /var/log/dovecot-lda/lda.log log_path = /var/log/dovecot-lda/lda-errors.log mail_fsync = optimized mail_plugins = sieve quota autocreate expire postmaster_address = angryni...@medianetork.ro sendmail_path = /var/qmail/bin/sendmail } protocol lmtp { mail_fsync = optimized } type of error: COREDUMP Feb 04 11:49:59 imap(portase.flo...@medianetork.ro): Fatal: master: service(imap): child 23391 killed with signal 11 (core dumped) Disabling of shared mailbox results in correct functioning of dovecot. To mention again: dovecot version previous to 2.2 was working OK. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS8McEAAoJECEzxtLP+204yTIIAI9wH1KKwImdBRipKX12ibfT q+WPazWE5gTRNTf+BG4yaxE+UKtm6KchJovTGdALdfShU24pELl0NEAt3j5OHIsA 5OP3nMddhySzN8DicWarp3eKfYb4itBuHvHaJAtLH9wtgWtqDjYw2q3sy+qNw+zN 6p8KFnNVKi53dgUkog+wb4cOSVjVnmIzSpU7PNNRU+dMaKpbARiWBPXP5sp/B9px RZCmvDedJhHb083KQDqNtR/mlTOhciC8oU/9Nn5WZmaTJAe4gusiRISAWhmH9fnJ IUV6DeEGZ8fbmHdXOQ2U72gPiXyxtFjTc8kURWhbhuzgeKLsSGennV/wLv0U7lw= =tDEn -----END PGP SIGNATURE-----