Wrong Account Used for Replies
 

I have Outlook 2003 configured with two email accounts and despite the fact
that I have account 1 configured as the default account, when I reply to an
email it always gets sent out as a reply from account 2. Every time I send
a new email it is sent from account 1 and when people reply it gets sent to
account 1, but when I hit reply it gets sent from account 2 unless I
manually switch it. How do I ensure that account 1 is always used as the
account from which replies get sent?