Why are emails sent via Mailman displayed incorrectly in Yandex.Mail?

Question

Email

Good afternoon.
Can you tell me why emails may not be displayed correctly in the Yandex.Mail web interface?
This is what is meant by incorrect display - all the pictures in the letter are not displayed where they should be, but at the bottom of the letter.
I tried to use tables when creating a letter.
The same letters are normally displayed in the mail.ru and gmail.com web interface.
Sending letters goes through Mailman/Exim. The email is created in Outlook 2010.
Thank you.

Answer 1

Found the reason.
In mailman, you can set the header for mailing, which is added to each letter.
This footer is encoded in koi8-r.
If you remove it, then the letters are displayed normally.

Answer 2

1. Letters must be typed in tables.
2. I recommend that you familiarize yourself with the tablet and save it to your bookmarks :)
3. If you want real help, then indicate the source of the letter. It is impossible to give a specific answer without seeing what exactly you have created.