我试图调试cron没有在我没有配置的Centos 6盒子上发送邮件的问题.如何确定哪个邮件程序用于发送邮件？ crontab手册页有这样的说法,部分内容如下：
In addition to LOGNAME,HOME,and SHELL,cron(8) will look at MAILTO if it has any reason to send mail as a
result of running commands in “this” crontab. If MAILTO is defined (and non-empty),mail is sent to the user so
named. If MAILTO is defined but empty (MAILTO=””),no mail will be sent. Otherwise mail is sent to the owner
of the crontab. This option is useful if you decide on /bin/mail instead of /usr/lib/sendmail as your mailer
when you install cron — /bin/mail doesn´t do aliasing,and UUCP usually doesn´t read its mail.
带有星号的部分让我想知道“好吧,是sendmail还是邮件？”
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