Without any gpg signature, the doveconf -n may be more readable :

doveconf -n

2.2.9: /etc/dovecot/dovecot.conf

OS: Linux 3.13.0-49-generic x86_64 Ubuntu 14.04.3 LTS

login_trusted_networks = 10.0.3.0/24 mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_plugins = quota acl 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 { list = children location = maildir:/var/mail-data/vhosts/%%u:INDEX=~/shared/%%u prefix = shared/%%u/ separator = / subscriptions = no type = shared } 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 = separator = / type = private } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile acl_shared_dict = file:/var/mail-data/acl_db/shared-mailboxes quota = maildir:User quota quota_grace = 10%% quota_rule = *:storage=2G quota_rule2 = Trash:storage=+100M sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = julienfastre@cvfe.be protocols = " imap lmtp sieve" service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } ssl_ca = </etc/dovecot/certificates/ca.pem ssl_cert = </etc/dovecot/certificates/mail.cert.pem ssl_key = </etc/dovecot/certificates/mail.key.nopass.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = quota acl sieve } protocol imap { mail_max_userip_connections = 30 mail_plugins = quota acl imap_quota imap_acl }

Le 14/09/15 10:00, Julien Fastré a écrit :

Hi,

First of all, thank you for the work the contributors are doing with Dovecot ! Dovecot is doing a great job !

I am encountering a problem with a configuration and, despite my search on the web, I do not find any solution for this problem.

Dovecot seems to stop accepting new connection. The users :

• can not save sent messages to "Sent" folder (using Thunderbird) ;
• can not connect or retrieve message from webmail (using sogo or roundcube)

In the log, I see this error :

...

Jun 30 13:54:53 mail dovecot: imap-login: Error: read(anvil) failed: EOF Jun 30 13:54:53 mail dovecot: message repeated 2 times: [ imap-login: Error: read(anvil) failed: EOF]

(the message may be repeated more than 2 times)

It happens... sometimes. Manually restarting the dovecot service make the software working again.

By searching on the web, I regularly see this statement in logs :

...

dovecot: auth: Error: read(anvil-auth-penalty) failed: EOF

like here : http://www.dovecot.org/list/dovecot/2010-November/054694.htm l

But it doesn't seem to be the same problem as mine (anvil / anvil-auth-penalty).

The problem happens during peak load. Sometimes it happens twice a week, sometimes it may spent two month without any problem (during holidays, I did not had any problem).

My configuration :

...

doveconf -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux

3.13.0-49-generic x86_64 Ubuntu 14.04.3 LTS login_trusted_networks = 10.0.3.0/24 mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_plugins = quota acl 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 { list = children location = maildir:/var/mail-data/vhosts/%%u:INDEX=~/shared/%%u prefix = shared/%%u/ separator = / subscriptions = no type = shared } 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 = separator = / type = private } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile acl_shared_dict = file:/var/mail-data/acl_db/shared-mailboxes quota = maildir:User quota quota_grace = 10%% quota_rule = *:storage=2G quota_rule2 = Trash:storage=+100M sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = julienfastre@cvfe.be protocols = " imap lmtp sieve" service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } ssl_ca = </etc/dovecot/certificates/ca.pem ssl_cert = </etc/dovecot/certificates/mail.cert.pem ssl_key = </etc/dovecot/certificates/mail.key.nopass.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = quota acl sieve } protocol imap { mail_max_userip_connections = 30 mail_plugins = quota acl imap_quota imap_acl }

As somes answer about anvil-auth-penalty may suggest it is linked with proc capabilities, this is the limitation of the /proc

...

root@mail:/home/ubuntu# ps -aux | grep anvil postfix 4568 0.0 0.0 27404 1596 ? S 08:00 0:00 anvil -l -t unix -u -c dovecot 5788 0.0 0.0 9280 956 ? S 09:45 0:00 dovecot/anvil root 5973 0.0 0.0 11748 928 pts/2 S+ 09:57 0:00 grep --color=auto anvil root@mail:/home/ubuntu# cat /proc/5788/limits Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size 268435456 268435456 bytes Max stack size 8388608 unlimited bytes Max core file size 0 unlimited bytes Max resident set unlimited unlimited bytes Max processes 257157 257157 processes Max open files 1024 4096 files Max locked memory 65536 65536 bytes Max address space 268435456 268435456 bytes Max file locks unlimited unlimited locks Max pending signals 257157 257157 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us

If it may help, dovecot is running inside an lxc container.

I would really appreciate any help. Thanks for your time !

Julien Fastré

-- Julien Fastré Champs Libres http://www.champs-libres.coop +32 486 540 660

Champs Libres Cooperative SCRLFS Rue Jean Bury 23 - 4000 Liège - Belgique BE0541.427.670