378148 - Mails moved into different folders reappear on imap account shared with others on buggy uw-imap server

Status: RESOLVED INVALID

(Thunderbird :: Mail Window Front End, defect)

Description

[Michael Mess]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.11) Gecko/20070327 Ubuntu/dapper-security Firefox/1.5.0.11
Build Identifier: Thunderbird version 1.5.0.10 (20070306)

We are using one imap-account together at the same time (Everybody has his thunderbird client running at the same time).

If one moves read mails to a different folder, the mails sometimes reappear in the inbox.
Most times they are marked as read, but sometimes they reappear even marked as unread, thus another person thinks the mail is still new.

It seems that there is a problem with syncronizing with the imap account like one client moves some mails, but another client doesn't get to know about that and writes its actual (and wrong) status back to the imap server, thus marking removed read mails as not removed and maybe unread.
Or the client which moved the mails away didn't mark them as removed in the imap account correctly.

Reproducible: Sometimes

Steps to Reproduce:
1. Setup one imap account.
2. Setup many thunderbird clients for that account.
3. Receive much mail on that account (maybe 40 per day)
4. Read some of the mails with each client and move it to another folder (the oldmail-folder) while most people have their email client started.
5. Let the person who moved email or somebody else close thunderbird and start it again. At least this person will see some mails to reappear.


Actual Results:  
Often some mails reappear.
This can lead to that these mails are handled by us twice. 
When that mail is moved by us to the oldmail-folder again it will be duplicate there (which is not a bug, but is proof for that the same mail has been handled by us twice).

If someone compacts the mailbox, the reappeared mails may contain some rubbish data (seems to be binary).
Restarting thunderbird will help to let these messages dissappear in that case.




Expected Results:  
When one person reads mails and moves them to the old-mail-folder, they should be marked as removed in the inbox and everybody else should be able to see that in his inbox. Mails marked as removed shouldn't reappear unless marked as undeleted by somebody.

Sometimes new mail will not appear in one client, so that the person won't know there is new mail unless been told by somebody else.
Restarting thunderbird helps to let the new mail appear in this client.

Comment 1

[Michael Mess]

This problem seemed to be caused by a buggy imap mail server.
Since we moved to another mail server we do not have this problem again.

Comment 2

[Michael Mess]

The buggy imap server was uw-imap.

Now we are lucky with cyrus.

Michael.

Comment 3

[Wayne Mery (:wsmwk)]

=> invalid.  thanks for the feedback Michael