[exim] How to remove Exim version from Email Header

[Anant]

Hello All,

I am using exim 4.72 , installed from yum repo, Now I want to remove 
Exim version (*(Exim 4.72)*)from the Email header. and any idea how can 
we remove that  " *(Dovecot) with LMTP id* " also.

Received: from solo.techblue.co.uk
        by solo.techblue.co.uk*(Dovecot) with LMTP id*  dKRJJWFSxVJxXwAAG2fxGQ
        for <anant.saras...@techblue.co.uk>; Thu, 02 Jan 2014 11:53:14 +0000
Received: from [210.7.X.X] (helo=[192.168.100.71])
        by solo.techblue.co.uk with*esmtp (Exim 4.72)*
        (envelope-from <t...@techblue.co.uk>)
        id 1Vygpt-0006Pt-Kt
        for anant.saras...@techblue.co.uk; Thu, 02 Jan 2014 11:53:14 +0000



Thanks & Regards,

Anant Saraswat
anant.saras...@techblue.co.uk


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