# dovecot --version

2.3.10.1 (a3d0e1171)

Dovecot is unable to start, I see error " Fatal: fchown() failed for /run/dovecot/login: Operation not permitted"

what could be the problem?

any help please

$ls -la  /var/mail/

drwxr-xr-x    1 root     root          4096 May 29 17:32 .

drwxr-xr-x    1 root     root          4096 May 28 17:08 ..

drw-------    2 root     root          4096 May 29 17:32 domains

====# cat /etc/dovecot/dovecot.conf=====

auth_mechanisms = plain login

auth_username_format = %Lu

auth_verbose = yes

auth_debug = yes

auth_debug_passwords = no

log_timestamp = "%Y-%m-%d %H:%M:%S "

login_greeting = IMAP server ready

disable_plaintext_auth = no

protocols = imap pop3

log_timestamp = "%Y-%m-%d %H:%M:%S "

mail_location = maildir:/var/mail/domains/%d/%n

first_valid_gid = 105

first_valid_uid = 102

last_valid_gid = 105

last_valid_uid = 102

service anvil {

    client_limit = 2100

}

ssl_cert = </secret/tls.crt

ssl_key = </secret/tls.key

ssl_ca = </secret/ca.crt

namespace inbox {

    inbox = yes

    mailbox Trash {

            auto = create

            special_use = \Trash

    }

    mailbox Spam {

            auto = no

            special_use = \Junk

    }

    mailbox Ham {

            auto = no

    }

    mailbox Sent {

            auto = subscribe

            special_use = \Sent

    }

}

# service auth {

#     unix_listener auth-master {

#         mode = 0600

#         user = vmail

#     }

#     unix_listener /var/spool/postfix/private/auth {

#         mode = 0666

#         user = postfix

#         group = postfix

#     }

# user = root

# }

# service auth-worker {

#     user = root

# }

# protocol lda {

#     log_path = /home/vmail/dovecot-deliver.log

#     auth_socket_path = /var/run/dovecot/auth-master

#     postmaster_address = postmaster@razalabs.com

# }

protocol pop3 {

    pop3_uidl_format = %08Xu%08Xv

}

userdb {

    driver = static

    args = uid=102 gid=105 home=/var/mail/domains/%d/%n allow_all_users=yes

}

passdb {

    driver = sql

    args = /etc/dovecot/dovecot-sql.conf.ext

}

=================/etc/dovecot/dovecot-sql.conf.ext===============

driver = mysql

connect = host=localhost dbname=mail user=root password=pass

default_pass_scheme = CRYPT

password_query = SELECT email as user, password FROM users WHERE email='%u';

=================dovecot-sql.conf.ext===============

=================/etc/dovecot/dovecot-sql.conf.ext===============

driver = mysql

connect = host=localhost dbname=mail user=root password=pass

default_pass_scheme = CRYPT

password_query = SELECT email as user, password FROM users WHERE email='%u';

=================dovecot-sql.conf.ext===============

and postfix

 =================/etc/postfix/main.cf===============

inet_protocols = all

meta_directory = /etc/postfix

shlib_directory = /usr/lib/postfix

myhostname = mail.my-domain.com

mynetworks = 127.0.0.0/8

message_size_limit = 30720000

virtual_alias_domains =

virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf

virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf

virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf

virtual_mailbox_base = /var/mail/domains

virtual_uid_maps = static:102

virtual_gid_maps = static:105

smtpd_sasl_type = dovecot

smtpd_sasl_path = /var/spool/postfix/private/auth

smtpd_sasl_auth_enable = yes

broken_sasl_auth_clients = yes

smtpd_sasl_authenticated_header = yes

smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination

smtpd_use_tls = yes

smtpd_tls_cert_file = /secret/tls.crt

smtpd_tls_key_file = /secret/tls.key

#virtual_create_maildirsize = yes

#virtual_maildir_extended = yes

proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks

virtual_transport = dovecot

dovecot_destination_recipient_limit = 1

smtpd_milters           = inet:127.0.0.1:8891

milter_default_action   = accept

=================/etc/postfix/main.cf===============