Help with nating SMTP on Cisco PIX 501

I am trying to get SMTP to work for a client that has an internal mail server. Attached is the code for the pix and i need to edit the ACL to allow port 25 to come in and nat it to the email server. Any and all help would be great!! I need to get this done tonight so hopefully i will get a responce tonight.
firewall-config.txt
rburneyAsked:
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Ernie BeekExpertCommented:
The only I would change is:
access-list 110 permit tcp any any eq smtp
To
access-list 110 permit tcp any host x.x.x.x eq smtp

X.x.x.x being the public ip of the mailserver. For the rest you should be good to go :)
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i_am_peteCommented:
What is the internal address of the mail server?
External ip?
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rburneyAuthor Commented:
Attached is the new config with my edits. The edited parts are marked with ****.
firewall-config-edited.txt
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rburneyAuthor Commented:
Look right?
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Ernie BeekExpertCommented:
So the x.x.x.x should be 66.18.49.138 and the .20.8 is the internal address of the mailserver (?). Then everything is fine.
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