I am looking at my server's spamassasin and have stumbled across the "problem" that my outgoing email sends out its own X-Report and X-Score in the header (programs used are Outlook 2007 as client and exim4 with the vexim plugin and Spamassasin). On the one hand I want to get rid of the sent X-Report which gets sent out with every email and on the other hand I still want to have it for incoming mails. While I was trying to fix this (which I still haven't) I stumbled across this "error" which makes my email less trustworthy:

1.4 MSGID_MULTIPLE_AT      Message-ID contains multiple '@' characters

How do I get rid of the multiple '@' characters?