Not detected: Trojan.Dropper.Beagle.He

Below is translated content of report I recieved after sending a file to a friend. Avast Avir haven’t found anything (4.6 HE, build: Feb2006 4.6.763, VPS: 2006-03-20, fv.: 0612-0).

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Your message was not delivered to some or all recipients.

  Subject:	******
  Wysłano:	2006-03-20 21:50

Following recipients cannot be reached:

  John Doe (john.doe@*****.**) w dniu 2006-03-20 21:50
        550 5.7.1 VIRUS Trojan.Dropper.Beagle.He FOUND

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I don’t know what is antivirus software on the mail server, but I can find out. I got the file also. If you need more info and/or file, please email me.