[Bug 287394] New: KMail2 with fetchmail/postfix-fed mbox resource: can't get rid of "changed by another program" alerts

[astera.compositae at gmx.net]

https://bugs.kde.org/show_bug.cgi?id=287394

           Summary: KMail2 with fetchmail/postfix-fed mbox resource: can't
                    get rid of "changed by another program" alerts
           Product: kmail2
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: astera.compositae at gmx.net


Version:           unspecified (using KDE 4.7.2) 
OS:                Linux

I use fetchmail and postfix to regularly retrieve mail from a number of POP
accounts; it ends up in /var/mail/username. I also have an Akonadi mbox
resource pointed at that file so I can easily get at new mail with any random
email client I might want to try.

This works fine with Thunderbird or Evolution as well as console mailers like
Alpine... and it has worked fine in the past with pre-Akonadi KMail. 

But now Akonadi and/or KMail pop up four notifications every time I receive
mail to complain that file:///var/mail/username has been changed by another
program and that a backup has been created. Isn't it *supposed* to be changed
by another program? How else would it receive email?

I can turn off file monitoring for the Akonadi mbox resource, but then KMail
never finds any new email any more.


Reproducible: Always

Steps to Reproduce:
Set up fetchmail and postfix to stuff mail retrieved from POP accounts into
/var/mail/username. 
Create an Akonadi mbox resource and point it at this same file.
Receive new mail.

Actual Results:  
Mail appears in KMail in the folder representing the mbox resource, but
there're one notification popup "username" + three identical notification
popups complaining that file:///var/mail/username has been changed by another
program and that a backup has been created. Turning off file monitoring means
no more new email is seen in KMail.

Expected Results:  
Mail should appear in KMail in the folder representing the mbox resource,
without warnings, considering this is perfectly normal use of email software
(...it is, yes?)

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