Often the problem with deliverability can be due to you sending emails to your own server.
One way to test to see if your emails are actually being sent and received is to create some test email accounts on other servers and see if you can send an email to these accounts.
Sign up for a Gmail, a Mail account and a HushMail account. Once you have done this send your email campaign to them and check to see if your emails make it. If they do then there will be something not set up right with your mail server.

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