我在sendmail功能中获得成功，但没有在gmail收件箱中收到邮件

我已经提取sendmail.zip在我的项目，并成功地运行我的邮件功能。但是我的收件箱里没有任何邮件。我是否在php。ini文件或sendmail。ini文件中犯了任何错误，如果有人用详细的代码解释，这将是有帮助的我的php.ini代码:

**[mail function]
; For Win32 only.
; http://php.net/smtp
 SMTP = localhost
; http://php.net/smtp-port
 smtp_port = 25
; For Win32 only.
; http://php.net/sendmail-from
 ;sendmail_from = me@example.com
; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
; http://php.net/sendmail-path
sendmail_path = "C:'xampp'htdocs'comment_system'sendmail'sendmail.exe-t"
; 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(), even in safe mode.
;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
; Log all mail() calls including the full path of the script, line #, to address and headers
;mail.log = "C:'xampp'apache'logs'php_mail.log"
[SQL]
; http://php.net/sql.safe-mode
sql.safe_mode = Off**

sendmail.ini

; SMTPS (SSL) support
;   auto = use SSL for port 465, otherwise try to use TLS
;   ssl  = alway use SSL
;   tls  = always use TLS
;   none = never try to use SSL
smtp_ssl=ssl
; the default domain for this server will be read from the registry
; this will be appended to email addresses when one isn't provided
; if you want to override the value in the registry, uncomment and modify
;default_domain=gmail
; log smtp errors to error.log (defaults to same directory as sendmail.exe)
; uncomment to enable logging
error_logfile=error.log
; create debug log as debug.log (defaults to same directory as sendmail.exe)
; uncomment to enable debugging
;debug_logfile=debug.log
; if your smtp server requires authentication, modify the following two lines
auth_username=example.it@gmail.com
auth_password=...............
; if your smtp server uses pop3 before smtp authentication, modify the 
; following three lines.  do not enable unless it is required.
pop3_server=
pop3_username=
pop3_password=
; force the sender to always be the following email address
; this will only affect the "MAIL FROM" command, it won't modify 
; the "From: " header of the message content
force_sender=example.it@gmail.com
; force the sender to always be the following email address
; this will only affect the "RCTP TO" command, it won't modify 
; the "To: " header of the message content
force_recipient=
; sendmail will use your hostname and your default_domain in the ehlo/helo
; smtp greeting.  you can manually set the ehlo/helo name if required
hostname=

thank you in advance