We have a user that likes to cc or bcc himself when sending an important e-mail. I looked at the logs and saw that the mail was being relayed to all other addresses but not his own.

I logged into the Zimbra admin account e-mail and found that when he sends mail it is reported like this:

Spam FROM LOCAL [127.0.0.1]

X-Mailer: Microsoft Outlook 14.0
Subject: test
The message has been quarantined as: spam-7WaaW8OxM3Xf.gz

The message WAS NOT relayed to:
<users-email-redacted>:
250 2.7.0 Ok, discarded, id=04711-07 - spam
How do I troubleshoot this?