Step 1: Go to “Feedback loop Server” under Servers.
Step 2: Click on Create new, to create a new feedback loop server.
Step 3: Fill out the following details in “Create new feedback loop server”
Step 4: Save your changes.
Please note: that the server settings will be checked when you save the server and the save process will be denied if there are any connection errors.
Also, this is a good chance to see how long it takes from the moment you hit the save button till the moment the changes are saved because this is the same amount of time it will take the script to connect to the server and retrieve the bounced emails.
Some of the servers, like gmail for example, are very slow if you use a hostname(i.e: imap.gmail.com). If that’s the case, then simply instead of the hostname, use the IP address.
You can use a service like hcidata.info to find out the IP address of any hostname. When adding a feedback loop server make sure the email address is used only for it, nothing more.
This is important since the script that checks the emails needs to read all the emails from the account you specify and besides it can be time and memory consuming, it will also delete all the emails from the email account.