Problem "Unnamed attacment"

From one client I have received a lot of mails without other content than an “Unnamed attacment”. When I read these mails with other clients (ex. iPad), I can see the full messages as intended.
I cannot se any settings that could solve the problem. Please advice.

Regards
erik@palsbo.com

Hello,

can you please send me one of these problematic emails? right click on email - save as…

send it to galis@emclient.com
Together with this URL: https://discourse.emclient.com/emclient/to…

regards
Jan

I have the same problem.
Is there a solution for this?

Hello,

Yes, after I have received email from original poster with his issue we have found that sender sends bad composed email.

There is badly generated main over html.

regards
Jan