Hi MailPoet, I had my host look into the problem as you suggested and there response is below.
I hope this helps you to try fixing the issue otherwise, I will have to switch to another newsletter which I really did not want to do since I have yours set up.
InMotion’s Response:
When connecting to api.mailpoet.com from another server (not biz177) I am able to establish a connection to the mailpoet API over port 80. However, when connecting via your server we are unable to establish a connection. We have verified port 80 is open on the server and working correctly.
https://support.mailpoet.com/
You will need to reach out to MailPoet support and see if they are blocking requests from your server. The IP address of your server is 23.235.211.7 and may also reference biz177.inmotionhosting.com or https://secure177.inmotionhosting.com
You can also provide them the following information showing our connection attempts:
Successful connection from an alternate server:
[joshuab@lax-sys-pro-js2 ~]$ telnet api.mailpoet.com 80
Trying 195.154.221.18…
Connected to api.mailpoet.com.
Escape character is ‘^]’.
^]
Connection closed by foreign host.
Unsuccessful connection from your server:
[joshuab@biz177 ~]$ lynx api.mailpoet.com
Looking up api.mailpoet.com first
Looking up api.mailpoet.com
Making HTTP connection to api.mailpoet.com
Alert!: Unable to connect to remote host.
lynx: Can’t access startfile https://api.mailpoet.com/
[joshuab@biz177 ~]$ telnet api.mailpoet.com 80
Trying 195.154.221.18…
telnet: connect to address 195.154.221.18: Connection timed out