Need to access OWA or ping the mail server from the guest wireless network

Dear experts

I am challenge here on how to configure this. I wonder what are the steps to take for the  guest wireless network to ping the mail server only.

We want to be able to access OWA over the web and is not possible.

You can view my config.

interface Ethernet0/2
 description Guest Internet Access
 nameif Guest_Internet
 security-level 50
 ip address

dhcpd address Guest_Internet
dhcpd dns interface Guest_Internet
dhcpd lease 28800 interface Guest_Internet
dhcpd enable Guest_Internet

Thanks!  is-okc-asa-01
marceloNYCMiddle-Tier AdministratorAsked:
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John MeggersNetwork ArchitectCommented:
Looks like you have no ACL applied inbound on the DMZ interface.  Since the inside interface is considered more secure, you will need to add an ACL to permit desired traffic from the DMZ segment to the mail server IP address.  If all they need is OWA, then that should be only TCP/443.  You shouldn't need to deal with NAT issues between the interfaces, but it's something to keep in mind.  

access-list in-dmz permit tcp any host eq 443
access-group in-dmz in interface Guest_Internet
marceloNYCMiddle-Tier AdministratorAuthor Commented:
I don't have a in-dmz" in the firewall. Do I just enter the lines you gave me?
marceloNYCMiddle-Tier AdministratorAuthor Commented:
Not working... Any other thoughts?
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You will also have a problem with DNS, you are using internet srevers.  You will need to use something that can hand you the local IP of the server.

Without it you are getting your public IP address, and that doesnt work out so well.
Post a sanitized version of you current config, and we may be able to assist you better.
marceloNYCMiddle-Tier AdministratorAuthor Commented:
We are no longer going with this anymore. Thank you!

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marceloNYCMiddle-Tier AdministratorAuthor Commented:
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