My father in law has one e-mail account (with TalkTalk) for which he has been using Live Mail for several years.  It has recently started to download each e-mail from the server several times.  This morning there were 15 e-mails on the server (checked on TalkTalk Webmail) but Live Mail had dowloaded 253 when I stopped it.  It appeared to be heading to download 6350!

Can anyone help with a fix, please?