Welcome to my abandoned GoDaddy VPS!
This dreadful GoDaddy VPS has such miserably unreliable email delivery that I've been forced to move my web site elsewhere!
If you want reliable out-going email, you're unlikely to find it with a GoDaddy VPS... in two months of attempting to send daily emails to 3900 subscribers, never once did this miserable email system of GoDaddy ever deliver all of my emails!
The GoDaddy email server ip addresses were repeatedly blocked by email service providers such as yahoo and gmail as well as being all too often blocked by blocklists such as Spamhaus. In all cases, it was the GoDaddy email server which was blacklisted, not my ip address or my domain name. The exact number of failed email deliveries and the cause of the failures varied from day to day, but typically ranged from 20 to 200 delivery failures due to blocks against the GoDaddy email servers.
In my opinion, GoDaddy's claim of providing a reliable (or even usable) out-going email system on their VPS products is nothing short of fraud, and their policy of no refunds after 30 days strikes me as nothing short of thievery because they know full-well that it takes a while to get a website fully setup and then discover how dreadful their out-going email system really is!
Run Away! Quickly!