[Akonadi] [Bug 428448] New: Akonadi Refuses to Open mbox File in /var/spool/mail

[Garry Williams]

https://bugs.kde.org/show_bug.cgi?id=428448

            Bug ID: 428448
           Summary: Akonadi Refuses to Open mbox File in /var/spool/mail
           Product: Akonadi
           Version: 5.15.1
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: MBox Resource
          Assignee: kdepim-bugs at kde.org
          Reporter: gtwilliams at gmail.com
  Target Milestone: ---

SUMMARY
Define mbox account in /var/spool/mail/username and see error message when
restarting Settings -> Kmail -> Accounts -> Receiving.

Message is briefly visible in the Configure - Kontact dialog box from Settings
-> Kmail -> Accounts -> Receiving.  I have seen "No file specified." and
something like "Cannot read /var/spool/mail/garry".  It's hard to be accurate
because the error message only flashes on the screen briefly.  (That, in itself
is a bug that should be fixed.)

Add a sym link in home directory to /var/spool/mail/username and define mbox
resource using that file and now no error message, but...

kmail doesn't show all messages in mail box.

Kmail will not delete any messages in mail box.

Kmail won't show message has been read in the message list pane.


STEPS TO REPRODUCE
1. 
    $ mail garry  # Any local user on this machine.
    Subject: Test

    Test
    EOT
    $

(The line that says "EOT" was produced by typing CTRL-D after enter key to
start new line.)

2. Define Mbox resource in Settings -> Kmail -> Accounts -> Receiving -> Add ->
Custom Account
2. 
3. 

OBSERVED RESULT
Doesn't work.

Send multiple messages.  Delete one in kmail.  Nothing works as expected.


EXPECTED RESULT
Works


SOFTWARE/OS VERSIONS

Fedora: 5.8.16-300.fc33.x86_64
Kmail: kmail2 5.15.1 (20.08.1)
KDE Frameworks 5.73.0
Qt 5.15.1 (built against 5.15.1)
The xcb windowing system

ADDITIONAL INFORMATION
As far as I know, this simple mail format has been broken in kmail for at least
10 years.  Perhaps won't fix?  Withdraw option altogether?

My work-around is to use the /usr/bin/mail command.  I believe that program was
originally released in UNIX and later in Linux well before 2000.  POSIX
standardized it as /usr/bin/mailx in 1997.  I am unaware of any bugs in that
program.  Perhaps it could serve as an example how to process a mbox resource?

I would be happy to assist in any way I can.

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