Subscription notification emails has ip adress on it

Hi,

users that Subscribe to the blog, gets an email notification whenever there is a new blog that is posted.
In the message the View blog post is linking to the ip address of the website and not the actual http://www.domain.com/blogpost adresss..

Question : How do I change it to not link to ip address? and make it link to domain of the site

Thanks!

T