Log in to your Gmail account,
1. Select settings icon from top left
2. Click “Select all settings” button in opened “Quick Settings” menu
3. Choose the “Filters and Blocked Addresses” sub-menu in all settings section.
4. Click the “Create a new filter” button.
5. In the opened form, write “@mail.dyna-sim.com” address to “From” field
6. Click the “Create filter” button
7. Enable “Never send it to spam” checkbox
8. Finally, click the blue “Create filter” button.