Isn't it described in the documentation? You just need to configure mail on your WP device, specifying Exchange mailbox and your Domino/Traveler server FQHN (not URL) and your Domino credentials. Beware that it requires proper SSL with trusted certificate, self signed certificates need to be manually installed. You might get unauthorized errors, it is usually solved by adding domain style user name in Domino directory like DOMAIN\uname and using these credentials instead. At lease in beta this was required.

sorry. my fault. now it works.
i have a self signed cert, and and there is no problem.
configuring the email account on the phone, there is no need to add the domain name. in my case it ended up with an error. after the field was empty it worked.

also there is np need to use the domain name user style. i used my notes name.

tx kuno