Contact Form 7 – Windows server

Hello,

I am trying to use Contact Form 7 on my WP blog – which is hosted on a Windows server. When I first tried it I got the error message: “Failed to send your message. Please try later or contact administrator by other way.” In a big red box. So I contacted my web host and they said I would need to install and SMTP plug-in. I did and it resolved my problem with not getting any of the comment emails but I continue to get the error message when trying to use the contact form. Any suggestions on how I can resolve this issue? The SMTP plug-in is working as I can test from it and I do get the comment emails. help! Thanks! Kc