&reftitle.runtime; &extension.runtime;

# Mail configuration options

&Name; | &Default; | &Changeable; | &Changelog;
mail.add_x_header | "0" | PHP_INI_PERDIR | Available since PHP 5.3.0.
mail.log | NULL | PHP_INI_PERDIR | Available since PHP 5.3.0. (PHP_INI_SYSTEM|PHP_INI_PERDIR)
SMTP | "localhost" | PHP_INI_ALL |
smtp_port | "25" | PHP_INI_ALL | Available since PHP 4.3.0.
sendmail_from | NULL | PHP_INI_ALL |
sendmail_path | "/usr/sbin/sendmail -t -i" | PHP_INI_SYSTEM |

&ini.php.constants; &ini.descriptions.title;

`mail.add_x_header` `bool`

- Add `X-PHP-Originating-Script` that will include UID of the script followed by the filename.

`mail.log` `string`

- 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.

`SMTP` `string`

- Used under Windows only: host name or IP address of the SMTP server PHP should use for mail sent with the `mail` function.

`smtp_port` `int`

- Used under Windows only: Number of the port to connect to the server specified with the `SMTP` setting when sending mail with `mail`; defaults to 25. Only available since PHP 4.3.0.

`sendmail_from` `string`

- Which `"From:"` mail address should be used in mail sent from PHP under Windows. This directive also sets the `"Return-Path:"` header.

`sendmail_path` `string`

- Where the `sendmail` program can be found, usually `/usr/sbin/sendmail` or `/usr/lib/sendmail`. `configure` does an honest attempt of locating this one for you and set a default, but if it fails, you can set it here.

  Systems not using `sendmail` should set this directive to the sendmail wrapper/replacement their mail system offers, if any. For example, Qmail users can normally set it to `/var/qmail/bin/sendmail` or `/var/qmail/bin/qmail-inject`.

  `qmail-inject` does not require any option to process mail correctly.

  This directive works also under Windows. If set, `smtp`, `smtp_port` and `sendmail_from` are ignored and the specified command is executed.