eaglehood on "[Plugin: MailPoet Newsletters] smtp with Mailjet"

After some error and trial i think i figured out how it works:

1) Install the Mailjet plugin
2) Check the Mailjet Plugin settings - there you'll find the specifications which will also work for Mailpoet
3) Enter the smtp data in Mailpoet

Worked fine for me. In this case the host didn't block any IPs.