Service Desk 4.1.0 - User Survey NAT address

I like the new user survey feature but I don't know if I can use it. The server running the Helpdesk software is using a NAT address. When a survey is sent to a user it includes a link referencing 'http://<server IP>:<port>' . The IP is the internal address which can not be linked to from the public side of the router.

Is there a way to modify auto generated email that is sent to users to reflect a differnt URL?

****** Example ***************************
Please help us to improve our service by participating in this brief survey.

Kindly follow the below link to take up the survey :

http://192.168.0.100:8080/sd/SurveyDetails.sd?surveyMode=newSurvey&surveyID=1&userID=601

Thanks and Regards,
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