When a client on our network sends and email, using Outlook, the ip address of their computer is included in the header. This ip address then goes everywhere the email goes.
yep, that's objectionable for a lot of people.
The only IP that need be exposed is that of the outbound SMTP gateway. Absolutely nobody outside has any business knowing internal IPs. RFCs do not dictate or override anybody's security policies.
Also, is there a way to suppress it or replace it with something else?
You'd need a "regex header stripper"
/^Received: from.* \[192\.168\.1.*\] by mail.domain.com \(SMTPD32/ IGNORE
... where IGNORE is the IMGate/postfix header_checks.regexp syntax for deleting any matching header line. Of course, you'd have to make sure the regex was accurate, but I think the above would do it.
Len
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