249361 - Header-only mail was lost if the mail was automatically deleted from server by option settings before additonal download.

Status: RESOLVED EXPIRED

(MailNews Core :: Backend, defect)

Description

[WADA:World Anti-bad-Duping Agency]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8a2) Gecko/20040630
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8a2) Gecko/20040630

If header-only mail was automatically deleted from POP3 server by "Leave
messages on server/Until I delete or move them from Inbox" option before
additional download, the header-only mail was deleted from folder when "Click
Here" of the mail was clicked
This is applicable not only to header-only mail but also to partial mail by
"Disk Space" option.

I think this is current design and works as designed.
But this is based on non-partial mail download mechanism.
This behaviour is dangerous for partialy downloaded mail.
Partially downloaded mail should not be deleted until intentional deletion by
user or successuful additional download.

Reproducible: Always
Steps to Reproduce:
1. Setup a POP3 account for header only download
   1-1. Check "Fetch header only"
   1-2. Check "Leave messages on server"
   1-3. Check "Until I delete or move them from Inbox"
   1-4. Uncheck "For atmost NN days" (To make test case simple)
2. Send a mail to myself.
3. "Get Messages" for this account
4. Move the header only mail from Inbox to other folder
   (I tested this mail move by manual Junk Move)
   -> inicator in popstat.dat becomes "D" (Deletable from server?)
5. Connect to POP3 server by "Get Messages"  
   -> The mail is deleted from server
   -> popstat.dat entry is removed
6. Try "Additional Download" for the mail by clicking "Click Here".
   -> Mail disappers.



(Additional Information)

I think there are 2 possible ways ;
(A) Do not purge partial downloaded mail from folder if the mail is already
deleted from server, and issue warning message of "Already deleted from server
by your request".
(B) Do not apply automatic deletion option on mail which is partialy downloaded
but additional download is not done yet.
    - Do not apply "Until I delete or move them from Inbox"
    - Delay application of "For atmost NN days"
      until additonal download or deletion by user.

I prefer (A).

This bug's problem is similar to Bug 248742 but different because "Leave message
on server" is unchecked in Bug 248742 case.

Comment 1

[WADA:World Anti-bad-Duping Agency]

Bug 248742 Comment #4 says that partialy downloaded message is flaged as
"Deletable" in popstat.dat when moved to other folder from Inbox(Manual Move or
manual Junk move. Not when move by filter or Junk filter) even if "Leave
messages on server" is not requested.
So this bug has dependency on Bug 248742.

Comment 2

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

While your input is very important to us, our resources are limited and so we
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Comment 3

[Gervase Markham [:gerv]]

This bug has been automatically resolved after a period of inactivity (see above
comment). If anyone thinks this is incorrect, they should feel free to reopen it.