I'm trying to understand why none of the emails are going thru. I've tried both test and full campaign. No emails except to me go thru. Is it an authentication issue? What's going on?
It could be related to authentication, but I would have to investigate further! What's the name of email campaign you're working on and what are some of the email client domains you were trying to send to (Gmail, Yahoo, etc)?
It's possible, for example, if it's a private domain like a business, that their security protocols prohibit outside emails from getting through. This can be remedied with whitelisting, but I'll wait until I have more information before we go down that path. I look forward to your response.