Qmail Ldap Logs & Message-ID

Hello,

I am following good practices for a mail architecture.

I may log IPs, MTA names, time, .... and Message-ID.

I know that if you run this:

cat message | awk '/^$/ { exit } /^[mM][eE][sS][sS][aA][gG][eE]-/ { print }'

you get Message-ID of message.

Many people say that resolving it is modify extra.h value fiel. Catching all 
messages (in/out) in some account and create -alias/.qmail-account that 
containing
| awk '/^$/ { exit } /^[mM][eE][sS][sS][aA][gG][eE]-/ { print }'+

but I dislike this solution.

Any ideas?