Contain Out of Office messages to internal addresses only
An option to contain Out of Office messages to internal email addresses that can be controlled at the server level would be beneficial for us. We would like to be able to select certain email accounts to not send OOO messages to outside email accounts but still be allowed to email externally. Having this option available by the client would be beneficial as well.
Thank you for sharing your idea with us. It will be considered for future versions.
In the mean time, depending on your configurations there may be a way to do it using the AutoResponder Whitelist. For example, you could exclude messages with a X-MDSPF-Result header. If your mail server is only inserting this header into messages from non local users it would exclude those addresses from receiving the auto response message.
Another option would be to use the content filter rule to send messages back to people instead of using the autoresponders. The content filter can check the from address and only send the message if its a local user.
Jim Smith commented
We would want to prevent auto responses from being sent to all external addresses.