[Dovecot] "dovecot: Maximum number of mail processes exceeded"
At noon, I often get "dovecot: Maximum number of mail processes exceeded"
I'm at my wits end, which parameter needs to be increased further?
# 1.1.3: /usr/local/etc/dovecot.conf protocols: imap imaps pop3s ssl_cert_file: /etc/ssl/certs/postamt.pem ssl_key_file: /etc/ssl/private/postamt.key disable_plaintext_auth: no version_ignore: yes login_dir: /usr/local/var/run/dovecot/login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_process_per_connection: no login_greeting_capability(default): yes login_greeting_capability(imap): yes login_greeting_capability(pop3): no login_processes_count: 32 login_max_processes_count: 2048 login_max_connections: 512 max_mail_processes: 1024 mail_max_userip_connections: 2048 verbose_proctitle: yes mail_location: maildir:~/Maildir fsync_disable: yes maildir_copy_preserve_filename: yes mail_drop_priv_before_exec: yes mail_executable(default): /usr/local/sbin/imap_login_script mail_executable(imap): /usr/local/sbin/imap_login_script mail_executable(pop3): /usr/local/sbin/pop_login_script mail_plugins(default): quota imap_quota trash mail_log fts fts_squat mail_plugins(imap): quota imap_quota trash mail_log fts fts_squat mail_plugins(pop3): quota mail_log mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 mail_log_max_lines_per_sec: 0 imap_client_workarounds(default): outlook-idle netscape-eoh imap_client_workarounds(imap): outlook-idle netscape-eoh imap_client_workarounds(pop3): pop3_lock_session(default): no pop3_lock_session(imap): no pop3_lock_session(pop3): yes pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %v-%u pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh namespace: type: private separator: . prefix: INBOX. inbox: yes list: yes subscriptions: yes auth default: mechanisms: plain login cache_size: 64 master_user_separator: * verbose: yes passdb: driver: passwd-file args: /usr/local/etc/dovecot.masterusers pass: yes master: yes passdb: driver: shadow passdb: driver: pam args: cache_key=%u dovecot userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix plugin: fts: squat quota: maildir quota_rule: Trash:storage=100M quota_warning: storage=90%% /usr/local/scripts/quota-warning 90 quota_warning2: storage=95%% /usr/local/scripts/quota-warning 95 quota_warning3: storage=99%% /usr/local/scripts/quota-warning 99 trash: /usr/local/etc/dovecot-trash.conf
-- Ralf Hildebrandt (Ralf.Hildebrandt@charite.de) snickebo@charite.de Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155 http://www.arschkrebs.de I'm looking for a job Vampireware /n/, a project, capable of sucking the lifeblood out of anyone unfortunate enough to be assigned to it, which never actually sees the light of day, but nonetheless refuses to die.
Hi Ralf,
At noon, I often get "dovecot: Maximum number of mail processes exceeded"
I'm at my wits end, which parameter needs to be increased further?
You have to increase "max_mail_processes" as this code emits the error message:
if (mail_process_count == set->max_mail_processes) {
i_error("Maximum number of mail processes exceeded");
return MASTER_LOGIN_STATUS_INTERNAL_ERROR;
}[...]
max_mail_processes: 1024 [...]
But the question is: how much user are accessing your server simultaneously? Is it really more than 1024 or is mail_process_count wrong? Your overpowered server is surely able to handle more than 1024 connections.
Heiko
Heiko Schlichting Freie Universität Berlin heiko@FU-Berlin.DE Zentraleinrichtung für Datenverarbeitung (ZEDAT) Telefon +49 30 838-54327 Fabeckstraße 32 Telefax +49 30 838454327 14195 Berlin
- Heiko Schlichting <dovecot-l@FU-Berlin.DE>:
Hi Ralf,
At noon, I often get "dovecot: Maximum number of mail processes exceeded"
I'm at my wits end, which parameter needs to be increased further?
You have to increase "max_mail_processes" as this code emits the error message:
if (mail_process_count == set->max_mail_processes) { i_error("Maximum number of mail processes exceeded"); return MASTER_LOGIN_STATUS_INTERNAL_ERROR; }[...]
max_mail_processes: 1024 [...]
But the question is: how much user are accessing your server simultaneously? Is it really more than 1024 or is mail_process_count wrong?
├─runsvdir─┬─runsv───run───perl
│ ├─runsv───ntpd
│ └─runsv───dovecot─┬─2*[dovecot-auth]
│ ├─945*[imap]
│ ├─32*[imap-login]
│ └─32*[pop3-login]
Your overpowered server is surely able to handle more than 1024 connections.
Heiko
Heiko Schlichting Freie Universität Berlin heiko@FU-Berlin.DE Zentraleinrichtung für Datenverarbeitung (ZEDAT) Telefon +49 30 838-54327 Fabeckstraße 32 Telefax +49 30 838454327 14195 Berlin
-- Ralf Hildebrandt (Ralf.Hildebrandt@charite.de) snickebo@charite.de Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155 http://www.arschkrebs.de I'm looking for a job The Tao that is seen Is not the true Tao-until You bring fresh toner.
participants (2)
-
Heiko Schlichting
-
Ralf Hildebrandt