We seem to have an issue where if someone attaches a file with the .htm or .html extension (incoming via email) then it is excepted even though that file extension is not listed in the settings.

Any ideas on how we can restrict this?

Thank you

You do not have any restricted file types set... see Restrict by File Type field (in your screen shot)

@ntozier Thank you, that's most appreciated. I must admit I don't know the difference between restrict by file type and additional file type filters? Can you explain the difference please?

I thought the list of file extensions in the "Additional File Type Filters Box" would mean that only these file types would be accepted?

Thank you

Restrict by File type is a way to block certain types of attachments. If you click in the field it will give you some categories of types of files. Putting things in this field tells osTicket do not accept these types.

Additional File Type Filters is a way to allow specific types of files based on the file extension.

    ntozier Thank you for taking the time to reply and the explanation, it is very much appreciated.

    Thanks

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