dovecot - Aug 2016 - virtual users, mailer daemon send mails to non existant recipient and dovecot store it

Hello Aki,
here is the output:

# 2.2.10: /etc/dovecot/dovecot.conf
# OS: Linux 3.10.0-327.el7.x86_64 x86_64 CentOS Linux release 7.2.1511 
(Core)
auth_debug = yes
auth_master_user_separator = *
auth_mechanisms = plain login
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
mbox_write_locks = fcntl
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
}
passdb {
   args = /etc/dovecot/sieve.creds
   driver = passwd-file
   master = yes
}
plugin {
   quota = maildir
   quota_grace = 10%%
   quota_rule2 = Trash:storage=+100M
   sieve = ~/.dovecot.sieve
   sieve_dir = ~/sieve
}
protocols = imap pop3 lmtp sieve
service auth {
   unix_listener /var/spool/postfix/private/auth {
     group = postfix
     mode = 0660
  user = postfix
   }
}
service managesieve-login {
   inet_listener sieve {
     port = 4190
   }
}
ssl = required
ssl_cert = </etc/letsencrypt/live/mail3.albertville.fr/fullchain.pem
ssl_key = </etc/letsencrypt/live/mail3.albertville.fr/privkey.pem
userdb {
   args = uid=1001 gid=1001 home=/home/vmail/%Lu allow_all_users=yes
   driver = static
}
protocol lmtp {
   mail_plugins = " sieve"
}
protocol lda {
   mail_plugins = " quota sieve"
   postmaster_address = postmaster@%d
}
protocol imap {
   mail_plugins = " quota imap_quota"
}


Le 23/08/2016 ? 18:08, Aki Tuomi a ?crit :
> doveconf -n output

On 24.08.2016 09:43, Sam wrote:
> Hello Aki,
> here is the output:
>
> userdb {
>   args = uid=1001 gid=1001 home=/home/vmail/%Lu allow_all_users=yes
>   driver = static
> }
You basically accept all users here, this is why things get delivered.
If you don't like this, change this to some other userdb, preferably
same you are using for auth db.

Aki

Does it works with pam? Can I set it like this :

userdb {
    driver = pam
    args = uid=1001 gid=1001 home=/home/vmail/%Lu allow_all_users=no
}

Thanks Aki

Le 24/08/2016 ? 08:45, Aki Tuomi a ?crit :
>
> On 24.08.2016 09:43, Sam wrote:
>> Hello Aki,
>> here is the output:
>>
>> userdb {
>>    args = uid=1001 gid=1001 home=/home/vmail/%Lu allow_all_users=yes
>>    driver = static
>> }
> You basically accept all users here, this is why things get delivered.
> If you don't like this, change this to some other userdb, preferably
> same you are using for auth db.
>
> Aki