I have the same problem with KMAIL and Thunderbird. When I have "Leave mail on server" selected, Kmail downloads the email. Fine. When I click get mail again, it downloads the same emails again as if it didn't know the emails were already downloaded.

I can open Kmail the next day and it will download any new emails AND all the previous emails that were left on the server.

Can anyone help?

Thanks in advance,

Jack

That's the way it's supposed to work.

To prevent that, uncheck the option 'leave mail on the server'. When you download mail, you won't get the repeats. It is then up to you to store downloaded mail locally on your computer.

Really? kmail doesn't work like that for me. If I have already downloaded an email, and left it on the server, if I then ask kmail to "Check Mail", it does, and says "No new Messages".
So there must be a way of doing what MGorsky22 wants.

If it helps, I once had kmail get itself into a complete mess, I forget the exact problem, but the solution was to:
Stop kmail
Find where your mail directory is (it depends on distro: sometimes ~/Mail or ~/.Mail or, for (k)ubuntu it's ~/.kde/share/apps/kmail/mail)
In that mail directory you'll see directories corresponding to your mailboxes.
You'll also see a lot of "hidden" files that begin with a "dot". They have names like .inbox.index and .inbox.index.ids and .inbox.index.sorted
Delete all these .someting.index files. Do not delete your mailbox directories as these have your emails in them!

Now restart kmail. It will start slowly (may take minutes if you have 10000's of emails) because kmail is re-indexing all your mail.

After that it has worked perfectly ever since.

I guess I have the same problem MGorsky22 has, but, since I elect to 'not' leave my mail on the server, I don't get repeats. I just assumed that's the way it works.

Adage: assume - when you assume, you make an ass of u and me. Old age and failing memory; I forgot.

Thanks so much for your responses.

Downloading the mail off the server is no problem, nor is storing it on my personal computer after download. As you can imagine, the reason I want to store the non-spam email on the server is to have it available from multiple locations where I can't always use my Linux openSUSE 10.2 Dell E1505 laptop.

Thanks Tredegar, I'll try deleting the .index file(s). Hopefully that will work.

-Jack