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Verizon scans all email sent or receives and automatically blocks ones it thinks are spam based on its contents. You can send the email to them at spamdetector.update@verizon.net and they will review it to see if they can un-block it.
GoDaddy 
Known issues with authentication errors, they don't allow you to send emails from alias addresses, the sender must be the email account your connecting with.You need to use an actual email not a forwarding email according to GoDaddy. The below settings should be used for SMTP and PORT settings
SMTP: smtpout.secureserver.net
PORT: 80
Check box for requires authentication(as shown in screen shot about)
Does NOT require SSL and TLS according to GoDaddy
Put in your email in the Username & Default email fields(as shown in screen shot about)
Put in your password for the email(as shown in screen shot about)