在使用m4处理sendmail.mc的时候，为什么会出现错误"m4: Cannot open /usr/share/sendmail-cf/m4/cf.m4: No such file or directory"?
已更新 -
在使用m4处理/etc/mail/sendmail.mc的时候可能碰到如下错误：
# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
/etc/mail/sendmail.mc:10: m4: Cannot o...Subscriber exclusive content
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