Local users can't send mails internally unless they select the local exchange 2010 account.
Not sure the title made much sense but allow me to explain further. I've recently set up an exchange 2010 environment for a small organization. I've created the smtp * send connector and local mailbox accounts for the users. I've set up the users pop3 accounts in outlook 2007 along with local exchange mailboxes (so thats 2 accounts). Now here's the thing users can send emails locally only is the default account is the local server and can only send external mails if the pop account is default. Has anyone ever experienced this before? I'm pretty sure this is a DNS issue, but I don't know much about exchange dns records.