[kmail2] [Bug 500358] New: kmail stuck indefinitely when trying to load a remote mail

[tusooa]

https://bugs.kde.org/show_bug.cgi?id=500358

            Bug ID: 500358
           Summary: kmail stuck indefinitely when trying to load a remote
                    mail
    Classification: Applications
           Product: kmail2
           Version: 6.3.2
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: tusooa at kazv.moe
  Target Milestone: ---

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SUMMARY
Loading a remote mail via IMAP causes kmail to stuck for a very long time, as
well as blocking other actions.

STEPS TO REPRODUCE
1. have an IMAP account
2. start kmail and try to load one mail from the remote folder
3. 

OBSERVED RESULT
The UI is filled with the placeholder "Retrieving Folder Contents
Please wait..."

If I go on and try to load a local mail, it will not load. If I restart kmail
and load local mails first, it does load.

akonadictl console logs

org.kde.pim.akonadiserver: ItemRetrievalJob for request 26 finished with error:
"Unable to retrieve item from resource: Did not receive a reply. Possible
causes include: the remote application did not send a reply, the message bus
security policy blocked the reply, the reply timeout expired, or the network
connection was broken."
ProtocolException thrown:Failed to write all data
org.kde.pim.akonadiserver: Handler exception when handling command FetchItems
on connection kmail2-2458638910 (0x55ac2eec8e50) : Unable to fetch item from
backend (collection -1) : Unable to retrieve item from resource: Did not
receive a reply. Possible causes include: the remote application did not send a
reply, the message bus security policy blocked the reply, the reply timeout
expired, or the network connection was broken.
org.kde.pim.akonadiserver: ItemRetrievalJob for request 47 finished with error:
"Unable to retrieve item from resource: Did not receive a reply. Possible
causes include: the remote application did not send a reply, the message bus
security policy blocked the reply, the reply timeout expired, or the network
connection was broken."
org.kde.pim.akonadiserver: Handler exception when handling command FetchItems
on connection kontact-816255508 (0x55ac2eef6060) : Unable to fetch item from
backend (collection -1) : Unable to retrieve item from resource: Did not
receive a reply. Possible causes include: the remote application did not send a
reply, the message bus security policy blocked the reply, the reply timeout
expired, or the network connection was broken.
org.kde.pim.akonadiserver: ItemRetrievalJob for request 50 finished with error:
"Unable to retrieve item from resource: Did not receive a reply. Possible
causes include: the remote application did not send a reply, the message bus
security policy blocked the reply, the reply timeout expired, or the network
connection was broken."
org.kde.pim.akonadiserver: Handler exception when handling command FetchItems
on connection MessageViewer-94648823667984 (0x55ac2eec8200) : Unable to fetch
item from backend (collection -1) : Unable to retrieve item from resource: Did
not receive a reply. Possible causes include: the remote application did not
send a reply, the message bus security policy blocked the reply, the reply
timeout expired, or the network connection was broken.

EXPECTED RESULT
(1) the remote mail should load
(2) even if there is a problem causing the remote mail to not load, it should
not block other actions (e.g. looking at local mail)

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 6.6.74-gentoo-x86_64
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.1
**kmail 24.12.2**

ADDITIONAL INFORMATION

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