Hi all
We experience some unexpected behavior with dovecot. It happens that emails marked as read get marked as unread (MUA is Thunderbird on port 143). Unfortunately this happens randomly, reproducing this issue is difficult. We could not find any pattern, it happens rarely.
We are running dovecot version 2.2.24 on Debian Jessie (backports repository). /root@dovecot01:~# dovecot --version// //2.2.24 (a82c823)/
Our Setup: /ha-proxy01 -> dovecot-proxy01 (proxy=yes) -> dovecot01 (proxy=no) traffic on different ports to different servers.
- IP is used for multiple services (ports). We use the haproxy to send
/ Below the configuration (IMAPC is active for migration purposes).
Do you have any recommendations where we could focus for troubleshooting? I found some posts about mbox_lazy_writes causing similar issues. However we use mdbox in our setup.
If we enable rawlog for what log patterns should we search?
Your Inputs are highly appreciated!
Thanks and Regards plataleas
*----- haproxy configuration ------
*frontend frontend_mail.company.org-143 bind 10.100.189.34:143 mode tcp default_backend backend_mail.company.org-143 backend backend_mail.company.org-143 mode tcp balance source server dovecot-proxy01.company.org dovecot-proxy01.company.org:10143 check send-proxy-v2 server dovecot-proxy02.company.org dovecot-proxy02.company.org:10143 check send-proxy-v2 backup
*----- config Dovecot Proxy -----*
/root@dovecot-proxy01:~# dovecot -n # 2.2.24 (a82c823): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.13 (7b14904) # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.5 auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@* default_client_limit = 5000 default_process_limit = 500 disable_plaintext_auth = no haproxy_trusted_networks = 10.10.189.28,10.10.189.29 imap_capability = IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS listen = 10.10.189.25 mail_location = mdbox:%h/mdbox mail_max_userip_connections = 0 mail_plugins = zlib mdbox_rotate_size = 10 M 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 = INBOX. separator = . } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { gzip_save_level = 6 pop3_migration_mailbox = POP3-MIGRATION-NS/INBOX sieve = file:~/sieve;active=~/.dovecot.sieve zlib_save = gz } protocols = imap pop3 lmtp service imap-login { inet_listener imap_haproxy { address = 10.10.189.25 haproxy = yes port = 10143 } inet_listener imaps_haproxy { address = 10.10.189.25 haproxy = yes port = 10993 ssl = yes } } service lmtp { inet_listener lmtp { address = 10.10.189.25 port = 24 } } service pop3-login { inet_listener pop3_haproxy { address = 10.10.189.25 haproxy = yes port = 10110 } inet_listener pop3s_haproxy { address = 10.10.189.25 haproxy = yes port = 10995 ssl = yes } } ssl_ca =
/root@dovecot-proxy01:~# grep -v '^ *\(#.*\)\?$' /etc/dovecot/dovecot-ldap.conf.ext// //uris = ldaps://ldap.comany.org// //dn = 'cn=ldap-reader,ou=customers,dc=company,dc=org'// //dnpass = upser_password// //sasl_bind = no// //tls = no// //auth_bind = yes// //base = ou=customers,dc=company,dc=org// //user_attrs = =home=/data/vmails/%Ld/%Ln,=uid=10000,=gid=10000,mailquota=quota_rule=*:storage=%$G// //user_filter = (&(uid=%u)(pfAccountStatus=active))// //pass_attrs = uid=user,userPassword=password,pfmailHost=host,=proxy_maybe=yes// //pass_filter = (&(uid=%u)(pfAccountStatus=active))// /
*-------------config Dovecot LDA---------*
/root@dovecot01:~# dovecot -n /
# 2.2.24 (a82c823): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.13 (7b14904) # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.5 auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@* default_client_limit = 5000 default_process_limit = 500 disable_plaintext_auth = no haproxy_trusted_networks = 10.10.189.28,10.10.189.29 imapc_features = rfc822.size imapc_host = mail-direct.company.org imapc_list_prefix = INBOX imapc_user = %u listen = 10.10.189.42 mail_location = mdbox:%h/mdbox mail_max_userip_connections = 0 mail_plugins = zlib mail_prefetch_count = 20 mdbox_rotate_size = 10 M namespace { hidden = yes list = no location = pop3c: prefix = POP3-MIGRATION-NS/ } 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 = INBOX. separator = . } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { gzip_save_level = 6 pop3_migration_ignore_missing_uidls = yes pop3_migration_mailbox = POP3-MIGRATION-NS/INBOX sieve = file:~/sieve;active=~/.dovecot.sieve zlib_save = gz } pop3c_host = mail-direct.company.org pop3c_password = # hidden, use -P to show it protocols = imap pop3 lmtp service imap-login { inet_listener imap_haproxy { address = 10.10.189.42 haproxy = yes port = 10143 } inet_listener imaps_haproxy { address = 10.10.189.42 haproxy = yes port = 10993 ssl = yes } } service lmtp { inet_listener lmtp { address = 10.10.189.42 port = 24 } } service pop3-login { inet_listener pop3_haproxy { address = 10.10.189.42 haproxy = yes port = 10110 } inet_listener pop3s_haproxy { address = 10.10.189.42 haproxy = yes port = 10995 ssl = yes } } ssl_ca =