This is the error I'm getting (whenever i recieve and email): *deliver() : Fatal: setgid(5000(vmail)) failed with euid=5000(vmail), gid=8(mail), egid=8(mail): Operation not permitted (This binary should probably be called with process group set to 5000(vmail) instead of 8(mail)) *

I am at loss. I have tried "everything" i could think of (besides purging the machine and do it all over again, which is not an option -- unless it is). Can anyone help me fix this?

# 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 3.2.13-grsec-xxxx-grs-ipv6-64-vps x86_64 Debian 6.0.6 ext3 log_timestamp: %Y-%m-%d %H:%M:%S disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/lib/dovecot/imap-login verbose_proctitle: yes mail_uid: vmail mail_gid: vmail mail_location: maildir:/var/zpanel/vmail/%d/%n mail_debug: yes mbox_write_locks: fcntl dotlock auth default: mechanisms: plain login verbose: yes debug: yes debug_passwords: yes passdb: driver: sql args: /etc/dovecot/dovecot-sql.conf userdb: driver: sql args: /etc/dovecot/dovecot-sql.conf socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 432 user: vmail group: vmail plugin: trash: /etc/dovecot/dovecot-trash.conf

# /etc/dovecot/dovecot-sql.conf

driver = mysql connect = host=localhost dbname=zpanel_postfix user=USERNAME password=AWESOMEPASSWORD default_pass_scheme = PLAIN password_query =
SELECT name, domain, password
FROM mailbox WHERE name = '%n' AND domain = '%d' user_query =
SELECT maildir
FROM mailbox WHERE name = '%n' AND active = '1' AND domain = '%d'

#This is my ls -la drwxrwsrwx 5 vmail vmail 4096 May 2 18:39 vmail

#and this is inside vmail/ drwx--S--- 3 vmail vmail 4096 May 2 18:39 asfaltotejo.com drwx--S--- 3 vmail vmail 4096 May 2 12:35 gestaoconteudos.pt drwx--S--- 17 vmail vmail 4096 May 2 15:34 tribanet.com

#/var/run/dovecot srw-rw---- 1 vmail vmail 0 May 2 19:46 auth-master srw------- 1 root root 0 May 2 19:46 auth-worker.6564 srwxrwxrwx 1 root root 0 May 2 19:46 dict-server lrwxrwxrwx 1 root root 25 May 2 19:46 dovecot.conf -> /etc/dovecot/dovecot.conf drwxr-x--- 2 root dovecot 4096 May 2 19:46 login