Yahoo account gets old emails showing up as new emails creating duplicates

[maccamb]

Hi,

I have been using Yahoo Webmail for a few months now and the problem
is getting annoying now given the volume of duplicate emails. I am
running:
- Thunderbird version 2.0.0.14 (20080421)
- Webmail 1.3.2
- Webmail - Yahoo - 1.3.4b8
- Webmail - Hotmail - 1.2.15

The Yahoo account keeps thinking that some old emails that have been
ready already are new emails and downloads another copy to my local
folder thereby creating multiple copies as this happens every day. The
interesting thing is that it does this for a few emails only and I
have been unable to detect any pattern/commonality amongst these
emails.

Webmail config
- POP on port 2000 SMTP on port 2500 IMAP on port 2600
All servers up and running

Webmail - Yahoo config
- Mode = BETA website
- POP = only option checked is "Mark emails as read on server"
- Advanced = <nothing is configed>


I would appreciate any and all help!

Thanks very much and best regards

[Chris Clifton]

I think you need to change the "Use short ID" option in the Yahoo
extension advanced options. I understand that Yahoo changes the long ID
after mails have been stored in your inbox for a certain time, this
fools Thunderbird into thinking that they're new mails and downloading
again.

--

[Webmail Author]

This extension should help clean up the inbox

https://addons.mozilla.org/en-US/thunderbird/addon/4654

[maccamb]

Gents,

Thanks for your responses. Chris are you sure about the short ID
setting? Is this confirmed? I believe setting it reloads the inbox so
I want to be absolutely sure. I also have the Remove Duplicates
(Alternate) extension installed - it did not work on the account
because I got the duplicates back after a bit. But if the short ID is
an issue then I shall run it again after setting short ID on.

I await your confirmation.

Thanks very much for your help!


On May 28, 12:15 pm, Webmail Author <webmailextens...@gmail.com>
wrote:

[Chris Clifton]

Look back through the archives, I'm sure I've seen something about this
in the past. It never affected me because I've always had "Leave a copy
on the server" unchecked in the account settings so there never has been
any old messages to download twice.

--

[maccamb]

Got it. Thanks!

On May 28, 2:59 pm, Chris Clifton <christopher.clifto...@yahoo.co.uk>
wrote:

[alanrf]

I did the research on Yahoo message id changes some years ago. I then
worked with the developer of FreePops to install the "ShortId"
equivalent there (where it is not an option - you just get it) and
also with the the developer of (the now abandoned) MrPostman to
implement the same feature.

Later, I reviewed the issue with the Webmail Author and the result was
the "ShortId" option. Unfortunately starting to use it does involve
the re-download of the existing mailbox (that's why I wish it was the
default for new users), however I am not seeing any re-downloads of my
Yahoo mail and the same is true for those I support.

To be clear it is not the only cause of re-downloading Yahoo mail but
(especially on a regular basis) but it is the most likely.

[Webmail Author]

I though use short id was the default. I just checked the code, it's
the default in the pop component but not in the options panel. The
options panel would automatically create the pref key with the value
false and this pref would override the default in the pop component.