Hi Simon, check diagnostics logging level for MSExchangeTransport. Zoran > All, > > I have just noticed the following in the event viewer, can anybody shed > any light on the matter? > > Event Type: Error > Event Source: MSExchangeTransport > Event Category: NDR=20 > Event ID: 3030 > Date: 03/02/2004 > Time: 15:35:34 > User: N/A > Computer: JUPITER > Description: > A non-delivery report with a status code of 5.1.8 was generated for > recipient rfc822;joe@xxxxxxxxxxxxxxxxxx (Message-ID > <168401c3ea6b$5ad73780$02010a0a@xxxxxxxxxxxx>). =20 > > Have checked on google groups, eventid.net and microsoft to no success. > > Setup as follows > > Windows 2003 (patched upto date) > Exchange 2003 (patched upto date) > Sophos Anti Virus - Mail monitor (up to date) > > Many Thanks > Simon