I have to create a new system user with specific mail directory inside folder like /var/wwww/user/maildir
I have tried chown command to assign mail directory to user but my mails are being bounced for new created system users.
One of the user is working fine as that was created on sendmail and later I have transfered it to postfix.
root@veezphone:~# postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no config_directory = /etc/postfix home_mailbox = Maildir/ inet_interfaces = all inet_protocols = ipv4 mailbox_size_limit = 0 message_size_limit = 20480000 mydestination = myhostname localhost.$mydomain $mydomain myhostname = myhostname mynetworks = 127.0.0.1, x.x.x.x myorigin = /etc/mailname readme_directory = no recipient_delimiter = + relayhost = smtp_host_lookup = native smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes virtual_transport = dovecot 
