I've used the contact form plugin many times with no issues. However I have a site set up on a Linode server and for some reason the from address that I have added in the contact form settings e.g. email@example.com is being changed to firstname.lastname@example.org when the email comes through.
Anyone any ideas what is causing this. I'm thinking it's a server setting but wanted to check the plugin wasn't causing anything weird to happen as well.