Load Balancer

Hi ,

We are using Exchange 2010 sp2-- with cas array

Now we have implemented new RAdware hardware load balancer and changed the DNS pointing from cas array to load balancer IP.

Now i am not facing any issue with mail flow but i am facing issues with my application relay mails.

when we are trying to send an emails :- getting an error like "authentication error" 

So we have added load balancer IP to exchange relay list to bypass the request but no luck in the same.

Please suggest if application relay will work with Exchange or it will acs only as load balancer

Thank You

Regards Sushantgharpure