Srv web in DMZ to local domain

[mic912]

hi,

i have a pfsese 1.2.3 with

• sys0: lan
• sys1: wan ip (a.a.a.a)
• sys2: dmz

I've added  another public ip (a.a.a.b) on WAN by setup a new CARP address in firewall/Virtual IP.

So I've added nat and firewall rules to

• access to my web server in dmz by external ip a.a.a.a/a.a.a.b
• access to web for my web server.
• deny access from dmz to lan

Now,

• If my web server go to a external web site (like google) it works fine.
• If my web server go to local web site (my domain1 on a.a.a.a or my domain2 on a.a.a.a ) the request doesn't work.

Have you any suggestion?

thank you