Hello, all. Here's the scenario: PIX 501 provides firewall/VPN services to office with the web/mail server on the inside. Mail and web work fine on the local LAN, and web and POP/IMAP work fine on the outside, but SMTP does not. It appears that all outbound mail traffic coming through the outside interface is blocked, so outside of the office folks can receive mail just fine, but can't send.
My current config is attached.
Many thanks, in advance, for any suggestions you may have.