RE: Rejected message sometimes





Hello Donald,

Thanks for your posting here and also thanks for Ace's input.

Are you using SBS 2003 with Exchange server 2003 or SBS 2008 with Exchange server 2007 installed? Also, like Ace pointed, what software you are using for spam control/anti-spam?

As we know, anti-spam software like Trend product or Microsoft Forefront Security for Exchange (which is included with SBS 2008) may block message with certain types of "unsafe" attachments like .exe or
zip or .PDF etc. So please check if the issue only occur to message with certain kinds of attachments. Meanwhile, if the issue persists, please provide us with more detailed information or error message
about the spam emails.

Related information for your reference:

How to Configure Trusted SMTP Relay in Exchange on SBS 2008
http://blogs.technet.com/sbs/archive/2008/09/18/how-to-configure-trusted-smtp-relay-in-exchange-on-sbs-2008.aspx

Hope this helps. Also, if you have any questions or concerns, please do not hesitate to let me know.



Best regards,
Robbin Meng(MSFT)
Microsoft Online Newsgroup Support

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