Error resending mail after non-delivery error

Hi to all
Today I noticed a very strange behavior on my notes client (9.0.1 FP3)

  • I sent an email WITH ATTACHMENT to an invalid address .
  • Domino reply me with a non-delivery error 550: mailbox unavailable
  • Open the non-delivery report ,click on “Resend message” and edit the mail address in the little window.Now address is right…so i click on Send
  • Now mail has reached the recipient, but the file I’ve attached is disappeared!The mail is empty…only subject and nothing else
    Why??

Second question: why I don’t find the second mail in "Inbox folder??

Thank you very much