MIME encoding in google email

[plfoley]

We are running Exchange Server 2000 with SP3. Gmail (from google) seems to be
conflicting with the MIME in Exchange - the message will begin with
Mime-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_Part_8862_17274202.1119301439973"
References: <8DBD3A033B452349AF0A10D96E8967609802B0@
X-imss-version: 2.028
X-imss-result: Passed
X-imss-scores: Clean:99.90000 C:2 M:3 S:5 R:5
X-imss-settings: Baseline:4 C:1 M:4 S:4 R:1 (1.0000 1.0000).
------=_Part_8862_17274202.1119301439973
Content-Type: multipart/alternative;
boundary="----=_Part_8863_14580090.1119301439973"

------=_Part_8863_14580090.1119301439973
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline,

with the actual text of the message appearing later. There is usually no
subject, and attachments are not decoded. These emails are not spam or junk
mail; they are business-related.
Message encoding on the server is set to MIME - Provide message body as
plain text; Character sets for both MIME and non-MIME are Western European
(ISO-8859-1).

How should we fix this?

Thanks.