I can send and receive emails from outlook 2007, but when I try to send a newsletter to a group it will not send it. It does not give me an error message. It just will not go through. If I send emails to just the email address (firstname.lastname@example.org) it will send the email. If you send the email in the form outlook provides you from the group (ie John Doe (email@example.com) it will not send it through.
I have sent newsletters from this Outlook before so I am guessing it has something to do with a bad update.