Hello,
I put in production dovecot yesterday.
After an hour, nobody could log in ("Max number of imap connection"
error message on Thunderbird)
Afterward, I found these messages in the logs:
Jan 10 09:21:20 mailsrv dovecot: [ID 583609 mail.info] imap-login:
Disconnected: Connection queue full (no auth attempts):
rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx
In the panic, I changed these values in
/usr/local/etc/dovecot/conf.d/10-master.conf
default_process_limit = 20000
default_client_limit = 20000
This apparently solved the problem but now I have these messages when I
start dovecot:
Jan 11 14:41:08 mailsrvspare dovecot: [ID 583609 mail.info] master:
Dovecot v2.0.15 starting up
Jan 11 14:41:08 mailsrvspare dovecot: [ID 583609 mail.warning] config:
Warning: service auth { client_limit=4096 } is lower than required under
max. load (103024)
Jan 11 14:41:08 mailsrvspare dovecot: [ID 583609 mail.warning] config:
Warning: service anvil { client_limit=20000 } is lower than required
under max. load (60003)
What should I do ?
- adding "service_count = 0" in service imap-login { ... } and
removing the modifications I did in 10-master.conf ?
or
- should I configure differently default_process_limit and
default_client_limit ?
It is a small site (about 1000 users). Currently I have 666 imap
processes and 136 imap-login processes.
Additionnal infos:
The Server is a Solaris 10 Sun X4540 32GB RAM
mailsrv:~ % /usr/local/sbin/dovecot -n
# 2.0.16: /usr/local/etc/dovecot/dovecot.conf
doveconf: Warning: service auth { client_limit=4096 } is lower than
required under max. load (103024)
doveconf: Warning: service anvil { client_limit=20000 } is lower than
required under max. load (60003)
# OS: SunOS 5.10 i86pc
default_client_limit = 20000
default_process_limit = 20000
disable_plaintext_auth = no
first_valid_uid = 100
mail_debug = yes
mail_plugins = " quota"
mail_privileged_group = mail
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
passdb {
driver = pam
}
plugin {
quota = maildir:User quota
quota_rule = ?:storage=4G
quota_rule2 = Trash:storage=+100M
quota_warning = storage=95%% quota-warning 95 %u
quota_warning2 = storage=90%% quota-warning 90 %u
quota_warning3 = storage=80%% quota-warning 80 %u
sieve = ~/.dovecot.sieve
sieve_dir = ~/
}
postmaster_address = postmas...@esrf.fr
protocols = imap pop3 lmtp sieve
service imap-login {
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
}
}
service imap {
process_limit = 2000
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
}
service pop3-login {
inet_listener pop3 {
port = 110
}
inet_listener pop3s {
port = 995
}
}
service quota-warning {
executable = script /usr/local/bin/quota-warning.sh
unix_listener quota-warning {
user = dovecot
}
user = dovecot
}
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
driver = passwd
}
protocol lda {
mail_plugins = " sieve"
}
protocol imap {
imap_client_workarounds = tb-extra-mailbox-sep
mail_plugins = " quota imap_quota"
}
Best Regards
--
________________________________________________________
Didier GERVAISE didier.gerva...@esrf.fr 04 76 88 27 28
System Administrator ---- Computing Services
ESRF 6 rue Jules Horowitz 38043 Grenoble Cedex 09
________________________________________________________
