what do you mean by "mailing list" ?

(In reply to Laurent Montel from comment #1)
> what do you mean by "mailing list" ?

On the composer screen, you can save the recipients of a mail as list. This list is meant.

I noticed contact completion does not work at all....

I think this bug is related to bug #378437

I checked this against KDE Neon 5.9.4 -> same behavior. KMail/Kaddressbook is broken

Please fix this, I really have some distribution lists I'm working with...

Thank you!

If one has a named mailing list in kaddressbook then typing that name into a kmail address field causes kmail to try to send the email to 

<name of list>@<name of local Linux host> 

I think the absence of akonadi-runtime is not an issue.  Attempting to install it invites de-installation of the sqlite database underpinning kmail

[code]

linux-g2qv:~ # zypper in akonadi-runtime

Retrieving repository 'Packman Repository' metadata ...................................................................[done]
Building repository 'Packman Repository' cache ........................................................................[done]
Loading repository data...
Reading installed packages...
Resolving package dependencies...

Problem: installed akonadi-server-16.12.3-1.1.x86_64 obsoletes akonadi-runtime < 16.12.3 provided by akonadi-runtime-1.13.0-9.1.x86_64
 Solution 1: Following actions will be done:
  deinstallation of akonadi-server-16.12.3-1.1.x86_64
  deinstallation of akonadi-server-sqlite-16.12.3-1.1.x86_64
 Solution 2: do not install akonadi-runtime-1.13.0-9.1.x86_64

Choose from above solutions by number or cancel [1/2/c] (c): 

[/code]

Still an issue in KMail 5.5.0

I just upgraded to 5.5.1 and see the issue still on my installation.
On a KDE Neaon installation of same version I dont see it.

But there are some differences:
On my installation, the mailing list is in local address book, and the mails are mostly coming from google address book. it gets resolved as list_name@mypc.local (mypc.local is set as standard domain) 
while the NEON installation has everything locally and no standard domain set.
Can that be a reason? Anything else where I could look for?

I just tested this on a brand new Installation with KMail 5.5.2 - still broken

Your baloo database seems broken. Here it works fine.
You can easy test if code works.
open kaddressbook where you create a "list of address" 
you dnd it on a composer in lineedit
it will expand it.

If not it's because your database baloo is broken

(In reply to Laurent Montel from comment #11)
> Your baloo database seems broken. Here it works fine.

How can the baloo database be corrupted if it is a new installation

> You can easy test if code works.
> open kaddressbook where you create a "list of address" 
> you dnd it on a composer in lineedit
> it will expand it.

I created a 'test' list of addresses, added 2 addresses and tried to send:

Fehler beim Übertragen der Nachricht. Message sending failed since the following recipients were rejected by the server: test@linux.internal (The server responded: Requested action not taken: mailbox unavailable invalid DNS MX or A/AAAA resource record)

> If not it's because your database baloo is broken

Please explain how to verify/test it

did you try the dnd ?

(In reply to Laurent Montel from comment #13)
> did you try the dnd ?

I dont know what dnd is. I could not find it as command or package

drag and drop :)
You select an item in kaddressbook (a Mailing List element in list view)
and you move it on addressline in kmail

(In reply to Laurent Montel from comment #15)
> drag and drop :)

ROFL...that was a good one!

> You select an item in kaddressbook (a Mailing List element in list view)
> and you move it on addressline in kmail

Does not work - neither on the fresh installation, nor on a mature installation.
D&D of single contacts works

My two user installation, updated to today's tumbleweed (sorry, not present so cannot be more specific) reports restored functionality. 

So "fixed" for me

(In reply to Gerry Gavigan from comment #17)
> My two user installation, updated to today's tumbleweed (sorry, not present
> so cannot be more specific) reports restored functionality. 
> 
> So "fixed" for me

Did an update this morning as well (TW 20170708):
Plasma 5.10.3
Framework 5.35.0
QT 5.9.1
KMail 5.5.2 

Tested on the above TW as well as on a l new Leap 42.3 installation:
For me the issue persists *not fixed*

How to reproduce:
Install Leap 42.3 or tumbleweed (both are actually on the same KDE version)
Start kontact
Create IMAP Email-account and sync mail
Add google contacts and sync contacts
create new mail message, add some recipients, and save this as distribution list in the local address book (same issue if you save it in the google address book, just as remark)

create new mail message. Drag the distribution list to the recipient field. result: not possibe (KMail prevents the drop into the address bar)

Still an issue with KMail 5.5.3 , new user profile

...and obviously not related to akonadi-search: On a migrated (openSUSE 42.2 -> 42.3) account the address completion works nicely, but a mailing/distribution list is not being resolved

still broken in 5.6.3

*** Bug 384697 has been marked as a duplicate of this bug. ***

I could verify this behaviour in a fresh install of Leap 15.0 Build 129.1 using KMail 5.7.2
How to reproduce:
In the local addressbook, create a list with contact from your local address book.
Select the list as recipient of a mail -> working

Add an addressbook, lets say Google contacts.
Create a list with recipients from the Google address book, and save it in the local address book (same occurs if saved in google address book). When sending a mail to this list, it fails with the already described error message.

Quick update on this, using KMail/Kontact 5.9.1/Application 18.08.1 - problem is still present.
Reproduction instructions of comment 24 still valid.
Please fix!

One more hint - creating a small group of 5 recipients works (and is resolved as well), saving a list of 26 recipients fails. Default setting of max 200 recipients is unchanged

In between I believe its not the number of recipients - it's the name of the group: If I rename test_group to testgroup, everything works....

(In reply to Axel Braun from comment #25)
> Quick update on this, using KMail/Kontact 5.9.1/Application 18.08.1 -
> problem is still present.
> Reproduction instructions of comment 24 still valid.
> Please fix!

Confirm behavior on

Kontact 5.8.0
OS:     Linux 4.4.159-73-default x86_64
System: openSUSE Leap 42.3
        openSUSE 42.3 (x86_64)
Qt:     5.10.0
KDE:    5.45.0
Plasma: 5.12.4

Kmail however crashes on DnD with larger number of recipients, however

By chance I came around this issue again
KMail 5.16.3 (20.12.3)

If a list of mail recipients contains an underscore (like My_List), list is not exploded into single recipients. 

Workaround. Rename list to MyList, then it works. 

However, this is confusing for the user....

Operating System: openSUSE Tumbleweed 20210316
KDE Plasma Version: 5.21.2
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2