Problem setting up Interspire using different sender names

I have Interspire installed on a free hosting and it is working fine but when i send email the recipient email is showing the email from my hosting account in the "From" field. I am using the smtp settings on the hosting. If i try to use different name and email in the campaign settings they are not showing, only my real email "mail@mydomain.com".

Any tips how to fix this will be appreciated!