Sebastian Nielsen:
> Can it be done without a policy service or milter? Eg with some header
> checks? Or maybe a configuration option?
If it is not possible to use the address in Postfix's own Received:
header, you can copy the client IP address into a header with a
pcre or regexp table.
For example:
/etc/postfix/main.cf
smtpd_client_restrictions = pcre:/etc/postfix/prepend-client.pcre
/etc/postfix/prepend-client.pcre:
/^([0-9a-f:.]+)$/ prepend X-Client-Addr: $1
This syntax is also supported with regexp tables.
smtpd_client_restrictions uses the client IP address that is used
for SMTP server access control. It does not use the forwarded IP
address which is used for logging only.
Wietse
