Hi folks, My institute's mail server was upgraded to RHEL5 with dovecot 1.0-2.1rc5 recently. And it uses PAM authentication which points to LDAP server. Now from time to time it gets Error like
dovecot: Aug 29 09:23:59 Error: auth(default): pam(joshua,192.168.177.52): pipe() failed: Too many open files
and users can not login. My config is like
dovecot -n
# /etc/dovecot.conf base_dir: /var/run/dovecot/ log_path: /var/log/dovecot info_log_path: /var/log/dovecot listen: * login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_greeting: ASIAA Dovecot ready. login_processes_count: 4 mail_location: mbox:/asiaa/home/%u/:/asiaa/home/%u/mail/:INBOX=/var/mail/%u:INDEX=/asiaa/home/%u/mail/dovecot_indexes mail_debug: yes mail_full_filesystem_access: yes mail_drop_priv_before_exec: yes mail_executable(default): /etc/dovecot_postlogin_beforeimap.sh mail_executable(imap): /etc/dovecot_postlogin_beforeimap.sh mail_executable(pop3): /etc/dovecot_postlogin_beforepop3.sh mail_process_size: 512 mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %08Xv%08Xu auth default: passdb: driver: pam userdb: driver: passwd
Any suggestion or help is appreciated Cheers Joshua