[exim] Block by Subject with Wildcard

I have this code added to my configure file.

deny      message = X-Blackhole: Yes
      log_message = REJECTED - Subject in blocksubject list - $h_Subject
        condition = ${if exists{/usr/local/exim/blocksubject.txt}\
                    {${lookup{$h_Subject:}wildlsearch{/usr/local/exim/blocksubject.txt}{yes}{no}}}\
                    {no}}

My blocksubject.txt file has this in it:
    *test987123

It denies the message if this is the subject:
    test987123
    Atest987123

    

But not with these as subjects:
    test987123B
    Atest987123B

    
I tried to put an * at the end of th line too, but that allows all of the test emails through and denies none of the 4 above.

Ideally, I would like to be able to say, if the word test987123 is anywhere in the subject, deny it. Any help would be so appreciated.

Regards, Jess Mooers
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Landmann InterActive
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