If while sending emails to a mailing list and it's not showing the email in Email From rather than it's showing an email address of that mailing list inEmail From, you will need to change the mailing list List From Address to Poster Address. To do that please follow the steps below:
1. Login to the WebsitePanel.
2. Click On Mail > Accounts.
3. Choose Create Email Account.
4. Create the Email Account > check Domain Administrator > click Save.
5. Login to the Webmail Interface.
6. Click on Settings.
7. Expand Domain Settings > Expand Mailing List.
8. Select the Mailing List and click Edit.
9. Change From Address to Poster Address.
10. Click Save.