[Pkg-exim4-users] How can I delete Exim version from the mail header "Received:" ?

[Satoru Otsubo]

Hi, all

There is the SMTP Banner section at the last of main/02_exim4-config_options in /etc/exim4/exim4.conf.template.
I modified "# smtp_banner = $smtp_active_hostname ESMTP Exim $version_number $tod_full" and 
removed the comment as follows:

smtp_banner = $smtp_active_hostname ESMTP Exim $tod_full

And 
# /etc/init.d/exim4 restart

Then 
# telnet [my Exim4 server name] 25
........
220 [my Exim4 server name] ESMTP Exim Fri, 23 Nov 2012 10:50:26 +0900
........

That is, the Exim version is deleted.

But the "Received:" header of the email from my Exim4 server still indicates the Exim version as follows:
Received: from ........
	by ........ with smtp (Exim 4.72)

How can I delete Exim version from the mail header "Received:" ?


Thanks in advance
Satoru