Originally posted by jonr
My guess is that they're not set up to delete mail from the server as it's downloaded. This is useful in case you want to check mail from a remote location as well as from your usual workstation, but it just results in needless duplicate retrievals otherwise.
There ought to be a setting for the mail client(s) to delete mail from server after download. I believe that will solve the problem.
Thanx for the reply, most of the people who are complaining of this dnt leave a copy of their mails obn the server. Something else is wrong.