Hello

Yesterday, I could not receive an email anymore when I looked in the logs found the following errors:

• Sep  7 06:04:44 mail dovecot: master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped
• Sep  7 06:06:41 mail dovecot: master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped

If show the config i dont see any process_limits

Dovecot 2.2.13

root@mail:/var/log# dovecot -n

# 2.2.13: /etc/dovecot/dovecot.conf

# OS: Linux 3.16.0-6-amd64 x86_64 Debian 8.11

auth_mechanisms = plain login

auth_verbose = yes

disable_plaintext_auth = no

info_log_path = /var/log/mail.log

log_timestamp = %b %d %H:%M:%S Dovecot/

mail_access_groups = vmail

mail_location = maildir:~/Maildir

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 vironment mailbox date ihave

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 =

}

passdb {

  args = /etc/dovecot/dovecot-sql.conf.ext

  driver = sql

}

plugin {

  sieve = ~/sieve/.dovecot.sieve

sieve_dir = ~/sieve

}

postmaster_address = admin@

protocols = imap pop3 lmtp

service auth {

  unix_listener /var/spool/postfix/private/auth {

    group = postfix

    mode = 0660

    user = postfix

  }

  unix_listener auth-client {

    mode = 0660

    user = mail

  }

}

service lmtp {

  inet_listener lmtp {

    address = 127.0.0.1

    port = 24

  }

}

ssl_cert = </etc/dovecot/dovecot.pem

ssl_key = </etc/dovecot/private/dovecot.pem

userdb {

  args = /etc/dovecot/dovecot-sql.conf.ext

  driver = sql

}

protocol lda {

  mail_plugins = " quota sieve"

}

protocol imap {

  mail_plugins = " quota imap_quota"

}

root@mail:/var/log#