[Mail] 为什么我的maildrop没法自动回复？

[weixin_38097536]

.mailfilter中是这么写的：
cc `|mailbot -t "/usr/local/etc/overquota" -A "From:[e-mail]" -s "OVERQUOTA" $SENDMAIL -t ""`
/var/log/maillog中的错误提示：
delivery 7: success: bash:_-c:_line_1:_syntax_error_near_unexpected_token_`|'/bash:_-c:_line_1:_`|mailbot_-t_"/usr/local/etc/overquota"_-A_"From:[e-mail]"_-s_"OVERQUOTA"_$SENDMAIL_-t_""'/did_0+0+1/

这是怎么回事呢？