This usually means that the next e-mail (in the sequence of download to your
e-mail client) has some corruptions or illegal characters that keeps
interrrupting the download and disconnect the connection. The e-mail server
does not get the receipt confirmation and resend the duplicate e-mail
message again (and then gets interrupted again by the next message).
You need to access your e-mail through another interface, e.g. Web-based
interface and delete the offending message. Alternative, contact your
e-mail host provider and ask support to delete the message for you.
BTW, this newsgroup is for Microsoft Access, a database application, and not
general computer "access".