[kmail2] [Bug 458874] New: Sending an e-mail to a distribution list (group) not possible.

[Holger]

https://bugs.kde.org/show_bug.cgi?id=458874

            Bug ID: 458874
           Summary: Sending an e-mail to a distribution list (group) not
                    possible.
           Product: kmail2
           Version: 5.21.0
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: composer
          Assignee: kdepim-bugs at kde.org
          Reporter: host71 at hotmail.de
  Target Milestone: ---

Sending an e-mail to a distribution list (group) is not possible anymore. The
mail remains in outbox. 
Error Message: Invalid recipient adress. 
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1. Create a group with one or two valid e-mail adresses in kaddressbook.
2. open a new e-mail in kmail
3. select the group via recipient picker
4. enter a subject/some text
5. send the mail
6. sending the mail fails, remains in outbox, group name in recipient address
is changed, in my example from "Test Gruppe" to
"TestGruppe at localhost.localdomain" 

OBSERVED RESULT
Sending an e-mail to a group fails

EXPECTED RESULT
Sending an e-mail to a group works as before (previous versions)

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: openSUSE Tumbleweed 20220906/5.25.4
(available in About System)
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.97.0
Qt Version: 5.15.5

ADDITIONAL INFORMATION
issue appears on another installation also.

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