Fingerprinting PIX with nmap

["O.Kamal" <okamalo () gmail com>]

I got the following result while using nmap, the scan of port 25 gives
the firewall brand, what should be the recommendation to disable that
PIX fingerprinting?

PORT   STATE   SERVICE  VERSION
25/tcp   open      smtp         Cisco PIX sanatized smtpd

I guess disabling the mail guard "fixup smtp" on the pix is not a good idea.

Thanks,

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