iis下php mail函数的sendmail配置方法(官方推荐)

[mail function] 
; For Win32 only. 
SMTP = localhost 
smtp_port = 25 
; For Win32 only. 
;sendmail_from = me@example.com 
; For Unix only. You may supply arguments as well (default: "sendmail -t -i"). 
; sendmail_path = "" 
; 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 = 
 
默认情况下是以本机做为邮件服务器，这里我们需要借用sendmail来发送邮件，用sendmail来配置如用qq、163的邮箱来发送(一般都是以这种方式)所以我们需要把所有的选项都注销，即把SMTP = localhost和smtp_port = 25前面加上";"然后把sendmai_path=""前面的";"删掉，改为sendmai_path="d:\php\sendmail\sendmail.exe -t"，改完后的即是 
 代码如下:

[mail function] 
; For Win32 only. 
;SMTP = localhost 
;smtp_port = 25 
; For Win32 only. 
;sendmail_from = me@example.com 
; For Unix only. You may supply arguments as well (default: "sendmail -t -i"). 
sendmail_path = "d:\php\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 = 
 
注意以上只需要开启sendmail_path即可，然后保存 

接着修改sendmail目录下的sendmail.ini文件，主要填的内容有以下几项 
 代码如下:

smtp_server=smtp服务器地址(如 smtp.ym.163.com) 
auth_username=邮箱登录名(如 info@xxxx.com) 
auth_password=邮箱密码(如 xxxxxx) 
force_sender=发件人地址全写(如 info@xxxx.com) 
 
另外还有一项 
 代码如下:

; auto = use SSL for port 465, otherwise try to use TLS 
 
把前面的";"删除，即开启SSL安全登录选项即可 

以上四项正确填写修改完成后保存，然后重启IIS即可正常使用。 

如果不能发送邮件，检查下端口是不是被屏蔽了，mcafee是不是设置了禁止发送邮件等