well if your adventurous then try configuring it via DSC, Sounds like it would be easier than using the wizards. I haven't seen anyone successfully configure exchange with Verizon's settings yet, so if you do make sure to post a step by step for us.
well also keep in mind if you use their servers, then you're limited to their TOS on those emails. so
Must not include more than 100 recipients in a single e-mail.
- Messages will not be sent to any recipients in excess of 100.
Must not exceed 500 recipients in 1 hour.
- Exceeding 500 recipients in 1 hour will result in the suspension of the customer’s ability to send e-mail for 24 hours. This does not affect the customer’s ability to receive e-mail.
so if you're under that, then you should be golden to use their servers,