mail non funzona

[lucavalentino]

Ho installato postfix
configurato il file php.ini cosi

[mail function]
; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
; https://php.net/sendmail-path
sendmail_path = "/usr/sbin/sendmail -t -i"
; Force the addition of the specified parameters to be passed as extra parameters
; to the sendmail binary. These parameters will always replace the value of
; the 5th parameter to mail().
;mail.force_extra_parameters =

; Add X-PHP-Originating-Script: that will include uid of the script followed by the filename
mail.add_x_header = Off

; Use mixed LF and CRLF line separators to keep compatibility with some
; RFC 2822 non conformant MTA.
mail.mixed_lf_and_crlf = Off

; The path to a log file that will log all mail() calls. Log entries include
; the full path of the script, line number, To address and headers.
;mail.log =
; Log mail to syslog (Event Log on Windows).
;mail.log = syslog
mail.log = /var/log/phpmail.log

Poi ricevo
Warning: mail(/var/log/phpmail.log): Failed to open stream: Permission denied in /var/www/html/test_email.php on line 9
Warning: mail(/var/log/phpmail.log): Failed to open stream: Permission denied in /var/www/html/test_email.php on line 10
e email niente.
Ricordo che sto lavorando in locale.