Debug: open(/proc/self/io) failed: Permission denied

[se--- via dovecot]

Tried all kinds of user setup, and read what I found on different foras, but 
still get:

"Debug: open(/proc/self/io) failed: Permission denied"

Is anyone able to spot the misconfig? 

Thanks in advance!

This is my dovecot -n:

# 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.7.2 ()
# OS: Linux 5.4.70-050470-generic x86_64 Ubuntu 20.04.6 LTS
# Hostname: host
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain login
auth_username_format = %Ln
mail_location = maildir:~/Maildir
mail_privileged_group = mail
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    auto = create
    special_use = \Drafts
  }
  mailbox Junk {
    auto = create
    special_use = \Junk
  }
  mailbox Sent {
    auto = create
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    auto = create
    special_use = \Trash
  }
  prefix =
}
passdb {
  driver = pam
}
protocols = imap pop3 lmtp imap lmtp pop3
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
}
ssl = required
ssl_cert = </etc/letsencrypt/live/mail.spijoing.com/fullchain.pem
ssl_key = # hidden, use -P to show it
ssl_min_protocol = TLSv1.2
ssl_prefer_server_ciphers = yes
userdb {
  driver = passwd
}
_______________________________________________
dovecot mailing list -- dovecot@dovecot.org
To unsubscribe send an email to dovecot-le...@dovecot.org