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I've setup a transport rule to redirect all messages from support@ourdomain.com to support@ourdomain.supportsystem.com.

The redirection is working fine, but the support system identifies support@ourdomain.com as a participant because it matches the To: field in the original mail header and that will trigger a notification to the same support@ourdomain.com address to confirm that a support ticket has been opened.

So the confirmation mail then will be redirected back to the support system and we have a loop.

For now I was only able to completely remove the To: field in Office365, but that will also remove legitimate extras addresses that would be interested on the issue.

The transport rule was basic:

Apply this rule if Is sent to 'suporte@ourdomain.com' or 'support@ourdomain.com'
Do the following:
* Set audit severity level to 'Do not audit' and 
* Remove this header: 'To' and
* Redirect the message to 'support@ourdomain.supportsystem.com' and 
* Stop processing more rules

My question: Is there a more elaborate way to create custom transport rules in Office365 to match the original address and remove only those who matches the rule?

Vinícius Ferrão
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1 Answers1

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Just guessing: You could try to delete the remove "To" action, and then add an "Except if" condition. Let notification emails not be redirected and exclude notification emails that will cause loops.

Ivan Lv
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