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Getting an error with auto-reply rule


I recently setup an Exchange 2007 coexisting in an Exchange 2003 environment. Exchange 03 is currently routing emails from mailboxes that are in 07. However, auto-reply rules seems to stop working. This is the error I get:

Delivery has failed to these recipients or distribution lists:

The e-mail system had a problem processing this message. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.

Diagnostic information for administrators:

Generating server: ex03server.domain.com

#< #5.6.1 smtp;554 5.6.1 Body type not supported by Remote Host> #SMTP#

Does anyone know what this means? I have read that the cause could be the Exchange 03 server isn't supporting 8bitmime, but when i telnet and send an EHLO, it shows up in the list. Any suggestions?

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1 Solution
You should disable 8bitmime.

You can force server to publish 7bit MIME by using HELO instead of EHLO
Your symptom also matches a known issue in the exchange 2007 RTM which has been fixed in SP1.

To resolve this issue, you have two solutions:

·         Upgrade Exchange 2007 to SP1
·         Disable the verb 8bitmime on the Exchange 2003 servers, so Exchange will convert all the email to 7bit before sending to the host

draylanAuthor Commented:
Thanks for the response! I don't want to screw anything up so just want to clarify. I use ADSIEDIT and modify the msExchSmtpInboundCommandSupportOptions (default is 7697601) and subtract the 8bitmime decimal value which is 4194304? Is this correct?
For Exchange 2003 yes.
FOr Exchange 2007 you wouuld use set-sendconnector -id connector name -ForceHELO  $true
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