This statement means, if anybody try to access Y.Y.Y.Y from inside interface, it would redirect the traffic to X.X.X.X on outside. Is it what you want? why would internal users would initiate connection to Private IP?
Behind what interfac...
Can you once again try to remove this manual nat and add the below one:
Object net IRSA_Server
nat (inside,outside) static <mapped-ip> service tcp 80 80
If this mapped ip is the outside interface ip then use 'interface' keyword instead of the ma...
The other one also should work, i guess there is some overlapping nat statement which might be stopping this. Please share the output of 'show run nat'
Also the output of packet-tracer as requested by Aditya.
Try to use Manual NAT for your site to site vpn and Object nat for your rest of the traffic. Something like:
object network obj-any
subnet 0 0
nat (inside,wan2) dynamic interface
route wan2 0 0 <wan2 next-hop>
route wan1 0 0 <wan1 next-hop> 2...