SSL connection reset by peer

[Vince42]

Hi,

[Christian Kivalo] - [2016-07-23 14:50]
> I don't really have a suggestion for configuration but i think maybe
> some logs and the output of doveconf -n would help. Is the error
> definitly from your monitoring ip?

I already searched in the logs but did not find anything obvious.
Anything specific I should look for? My dovecot -n looks like this:

# 2.2.9: /etc/dovecot/dovecot.conf
# OS: Linux 3.13.0-68-generic x86_64 Ubuntu 14.04.4 LTS
auth_mechanisms = plain login
auth_username_format = %n
debug_log_path = /var/log/dovecot.log
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
environment 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 {
  driver = pam
}
plugin {
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
protocols = imap pop3 lmtp sieve pop3
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
}
ssl_cert = </etc/ssl/certs/mx24.crt
ssl_key = </etc/ssl/private/mx24.key
userdb {
  driver = passwd
}
protocol lmtp {
  mail_plugins = " sieve"
}
protocol lda {
  mail_plugins = " sieve"
}
protocol imap {
  mail_max_userip_connections = 256
}


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