[Dovecot] Meaning of mail_max_userip_connections?

[Harald Strack]

Hi Timo,

On Mon, 2010-09-27 at 14:42 +0100, Timo Sirainen wrote: 
> On Mon, 2010-09-27 at 15:30 +0200, Harald Strack wrote:
> 
> > Accordingly, mail_max_userip_connections limits the number of
> > connections from an IP. To deal with a scenario, when 400 Users behind a
> > NAT-gateway come from the same IP (the gateway), we have to set
> > mail_max_userip_connections = 400, right? 
> 
> No, wrong. It's a user+ip combination. Each different user behind the
> same IP can use up to 10 connections with
> mail_max_userip_connections=10.

Thanks a lot for your explanation! However, now I am at the beginning
again. 

> 
> BTW. What Dovecot version? If this isn't working as expected, maybe
> dovecot -n output could show something /usr/local
> 
We do not use the most recent version... but was there a bug with this
parameter?

# 1.2.8: /usr/local/dovecot-1.2.8/etc/dovecot.conf
# OS: SunOS 5.10 sun4u
base_dir: /var/run/dovecot-1.2.8
log_path: /var/log/dovecot.log
info_log_path: /var/log/dovecot.log
log_timestamp: %Y-%m-%d %H:%M:%S
listen: *:143
ssl_listen: *:993
ssl_cert_file: /usr/local/dovecot/etc/cert.pem
ssl_key_file: /usr/local/dovecot/etc/key.pem
verbose_ssl: yes
login_dir: /var/run/dovecot-1.2.8/login
login_executable: /usr/local/dovecot-1.2.8/libexec/dovecot/imap-login
login_processes_count: 8
login_max_processes_count: 8192
max_mail_processes: 16084
mail_max_userip_connections: 1000
mail_privileged_group: mail
mail_location: mbox:~/dovecot-home:LAYOUT=maildir++:INBOX=/var/mail/%
u:INDEX=%h/dovecot-indexes
mail_debug: yes
mmap_disable: yes
mbox_write_locks: fcntl dotlock
mail_plugins: listescape
imap_client_workarounds: netscape-eoh delay-newmail outlook-idle
namespace:
  type: private
  separator: /
  inbox: yes
  list: yes
  subscriptions: yes
auth default:
  debug: yes
  passdb:
    driver: pam
  userdb:
    driver: passwd

best regards

Harry