You can try an experiment. Compose an e-mail and enter several good e-mail addresses and several non-existent ones....
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They all get "mailed." Add your address from above. This may hang until you respond; it's a malformed address and needs action from you. Your e-mail client detected that it was malformed. If an e-mail client is smart enough to reject a malformed e-mail address, like aaa@....com, a virus writer can write code that will as well. The only difference is her code will delete the address and continue using the good ones.
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