When a teacher sends an email to a student’s @ibaldwin.org account, the teacher receives a reply email stating “Your message to (student’s name)@bcbe.org couldn't be delivered.”

This message should be ignored.  BCBE email routing rules cause this issue.  Here are the basic rules that are in place:

• When an email is sent to a teacher’s org account (teacher’s name)@bcbe.org, it is delivered to that address.
• When an email is sent to a teacher or a student at their org account (name)@ibaldwin.org, we have a forwarding rule that delivers the email to their corresponding @bcbe.org account.  This is for the teacher’s convenience, so that they only need to check email from one account. 
• When teachers send email to (student’s name)@ibaldwin.org, this email is delivered successfully to the student at that address. However a copy of the email is also forwarded to (student’s name)@bcbe.org (based on the previous rule), but students do not have email accounts on that domain (bcbe.org).  The bcbe.org domain is used exclusively for employees.