I created a rule in Exchange 2010 HT that prepends subject line for all emails coming in from outside the organization. The rule is working fine. But we have our internal solarwinds monitoring server that sends an email whenever a server goes down or gets rebooted and emails from solarwinds are getting their subject lines prepended which probably means that for the Exchange server, those emails qualify as coming in from outside the organization.
Any idea why is that happening ? That server is using an email address to deliver email alerts.
Thanks and Merry Christmas.