[Mimedefang] Possibly OT: Mangeling the SMTP server ip address?

[Matt A. Gargett]

This might be off topic, but I think mimedefang could do it also.

My sendmail server is inside my firewall, and I NAT to it, it 's actual IP
address is 130.211.1.75 and it's external address is 130.211.51.75.  My SMTP
proxy does not mangle the 130.211.1.75 to 130.211.51.75 when it leaves my
company.  So, the email looks like it comes from 130.211.1.75 when my domain
resolves to 130.211.51.75.  Could mimedefang mangle the headers on the way
out to make it look like it came from 130.211.51.75?  I do this to protect my
mail server via my firewall, and would much rather not put it outside my
firewall.

Any ideas?

- Matt