max number of connections per ip

[Esteban L]

I have tried a lot of different things, still no success. =(

here is my dove -n if anyone could help that would be great:


# 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.16 (fed8554)
# OS: Linux 4.9.0-12-amd64 x86_64 Debian 9.12
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = yes
mail_home = /var/mail/vmail/%d/%n
mail_location = maildir:~/Mail
mail_max_userip_connections = 500
mail_plugins = " quota"
mail_privileged_group = vmail
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 index ihave duplicate mime foreverypart extracttext
namespace inbox {
  inbox = yes
  location =
  mailbox Archive {
    auto = subscribe
    special_use = \Archive
  }
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Junk {
    auto = subscribe
    special_use = \Junk
  }
  mailbox Sent {
    auto = subscribe
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    auto = subscribe
    special_use = \Trash
  }
  prefix =
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
plugin {
  quota = maildir:User quota
  quota_grace = 10%%
  quota_rule = *:storage=10G
  quota_rule2 = Trash:storage=+1G
  quota_status_overquota = 552 5.2.2 Mailbox is full
  quota_warning = storage=95%% quota-warning 95 %u
  quota_warning2 = storage=80%% quota-warning 80 %u
  sieve = ~/.dovecot.sieve
  sieve_after = /etc/dovecot/sieve/spamfilter.sieve
  sieve_dir = ~/sieve
}
protocols = " imap lmtp sieve"
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
}
service imap-login {
  inet_listener imaps {
    port = 993
    ssl = yes
  }
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
}
ssl = required
ssl_cert = </etc/letsencrypt/live/little-beak.com/fullchain.pem
ssl_key =  # hidden, use -P to show it
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lmtp {
  mail_plugins = " quota sieve"
  postmaster_address = *****@little-beak.com
}
protocol lda {
  mail_plugins = " quota sieve"
}
protocol imap {
  mail_max_userip_connections = 500
  mail_plugins = " quota imap_quota"
}
protocol sieve {
  mail_max_userip_connections = 500
}


On 27.02.20 18:54, Esteban L wrote:
> I have been haunted by the following error message or months, that we
> see using Thunderbird.
>
> Unable to connect to your IMAP server.
>
> You may have exceeded the maximum number of connections to this server.
> If so, use the Advanced IMAP Server Settings dialogue to reduce the
> number of cached connections.
>
> If I change my location, via a VPN, the error message goes away and I
> can connect.
>
> I have edited my /etc/dovcot/conf.d/20-imap.conf file by adding the
> following:
>
>
> protocol imap {
>   # Space separated list of plugins to load (default is global
> mail_plugins).
>   mail_plugins = $mail_plugins imap_quota
>
>   # Maximum number of IMAP connections allowed for a user from each IP
> address.
>   # NOTE: The username is compared case-sensitively.
>   mail_max_userip_connections = 500
> }
>
>
> And, I still get the error message. I know myself, I have about 8-9
> accounts, some with as many as 10 folders (I know each one count's as
> it's own mailbox), as does my partner--who would access the internet
> from my IP.
>
> Does that number really have to be like 10,000, or something? If so, why
> does it start out so small in the first place. If not, what else could I
> do to avoid this message going forward??
>
>
>
>