PHP Sendmail 参数 Linux

Question

/usr/sbin/sendmail -t -i

我知道 -t 参数告诉 Apache 可以通过 php 发送电子邮件。

-i 参数有什么作用？还有其他值得了解的论点吗？

我知道的另一个是 -f myemail@example.com，它是来自覆盖的 sendmail。

Answer 1

   -i        This  option,  which  has  the  same  effect  as  -oi, specifies that a dot on a line by itself should not terminate an incoming,
             non-SMTP message. I can find no documentation for this option in Solaris 2.4 Sendmail, but the mailx command in Solaris 2.4  uses
             it. See also -ti.