How to block customized Chinese characters in mail filtering.

Hi All,

We want to block Email which subject includes some of Chinese characters.

We can do it by Email filtering ban word function in 4.3 version ,

but now this feature is removed from GUI,it seems only support by CLI after 5.2 version.

Have any way to display ban word option on GUI in firmware 5.2.10 ?

Or Fortigate provides an alternative solution supporting similar function ?

Thanks.

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