Hi Randy,
Are there any errors being logged to your DNN Event Viewer?
Since the only difference between you test site and your live site is the server it is being hosted on indicates that the issue may be caused by your hosting environment.
Some of the possible reasons:
- Most Likely
- A conflict with another DNN module in your portal being poorly written and could be the cause of the issue
- DNN portal issues – this could be caused by upgrading your DNN portal to a new version, corrupt dlls or many other things.
- Incorrect web.config configuration
- Less Likely
- SSL issue
- IIS Config issues
- URL rewriting
- Security software blocking
- etc, etc
If you are using an outside SMTP server such as one from Network Solutions, GoDaddy, hotmail etc. and are trying to have your DNN site send mail you must relay through your assigned SMTP server. They will require you to authenticate before you can send email and they may require use of a specific port for authenticated SMTP connections. Different providers will use different ports, I don't have a list but a quick call or a search of your email provider's help info will usually turn up the answer.
Also knowing what to look for and what question to ask will help. The question is: What port do I use for relaying from my SMTP client?
Hope this helps!