[Users] NetworkManager: network is offline.

[Paul]

On Thu, 4 May 2017 18:53:41 +0200
Alaa Salem <aasalem10 at gmail.com> wrote: 

> This above error start showing after upgrading to 3.14.1 using (sudo
> add-apt-repository ppa:ubuntuhandbook1/claws-mail )

This is not a bug, at least not a claws-mail bug, but a problem with
your network-manager installation, and that your claws-mail has been
built with network-manager support.

You can make claws-mail ignore network-manager by changing a hidden
pref.

* Quit claws-mail
* open ~/.claws-mail/clawsrc in your text editor
* find and set "use_networkmanager=0"
* save

with regards

Paul