The bug applies in the following configuration.
mailbox1@domain has alias of alias1@domain, the user also has a filter created that if an email is send to alias1@domain it should forward a copy to mailbox2@domain2.
This is configured as follows:
Filter Management under the user in mmc,
Criteria: Enabled Where the To or CC header line contain specific words alias1@domain
Action: Forward message to specified recipient; mailbox2@domain2
Criteria: Enabled Where a message header contains specific words alias1@domain
Action: Forward message to specified recipient; mailbox2@domain2
This works when outside senders send email to alias1@domain however it does not work when mailbox1@domains sends and email to alias1@domain via Bcc
How can this be fixed?