One of your filters uses a custom header that contains an invalid character, such as ':', a non-printable character, a non-ascii character, or an eight-bit ascii character. Please edit the msgFilterRules.dat file, which contains your filters, to remove invalid characters from your custom headers.
您的某个过滤器使用了一个包含非法字符的自定义的头，例如“:”，一个不可打印的字符，一个非 ascii 字符，或者一个八位 ascii 字符。请编辑 msgFilterRules.dat 文件（其中包含了您的过滤器信息），并从您的自定义头中移除非法字符。