SSIS Send Mail Task To Multiple Recipients

I'm using an SSIS "Send Mail Task" in an attempt to send to multiple recipients. In the TO line of the editor, I have specified the value as follows:

test@domain.com;test2@domain.com.

Only the last email address in the semicolon seperated list receives the mail.

SMTP Server is Microsoft Exchange

I'm running SSIS 2008

I have confirmed that all individual address work when set as the sole value in the task editor settings.

The MSDN documentation states that multiple addresses in TO line is supported but I have not been able to get it to work as intended. Can someone help with what I am missing or is this a bug.

Thanks