Header information showing on outbound message

[kevinpye]

After upgrading our server, whenever anybody send an outbound mail the text is proceeded with the follow:

ERVER with Internet Mail Service (5.5.2653.19)
id <FQ34SCYD>; Fri, 23 Feb 2001 15:56:54 -0000
Message-ID: <F025A6E833EDD411933A00E07D7D1C1A014C1E@NT_S 
ERVER>
From: Kevin Pye <kevin.pye@abssupplies.com>
To: Recipient
Subject:
Date: Fri, 23 Feb 2001 15:56:52 -0000
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2653.19)
Content-Type: text/plain;
charset=&quot;iso-8859-1&quot;

We are running Exchange 5.5 with SP4. This only happens on outboun Internet mail. Inbound and internal work fine.

Any ideas.

Thanks

Kevin Pye