IMAP/POP connection errors

This error can happen if you have the dap emailorder cron setup in your webhost control panel to process 1shpppingcart order/payment emails to grant automatic membership access to users that purchase products via 1sc.

1) If you are not using 1SC and are getting this error, you can turn off the cron job in your webhost control panel -> Under cron settings -> look for a cron command that has dap-emailorder.php set to run once every 10 minutes or so and remove that cron job.

2) if you are using 1SC and are getting this error, then that indicates an issue with your DAP config setup.

See step 3 in this document – http://digitalaccesspass.com/doc/troubleshooting-1shoppingcart-clickbank-integration/
If you use IMAP, then set port to 143, if you use pop3, set port to 110 (in dap setup -> config ->payment processing section)

3) If you still get that error, then it could be that your webhost preventing pop/imap connection to external email server.
Make sure you use an order email account/id that’s hosted on your host. Do not use say a gmail.com or yahoo.com account
under dap setup – config -> payment processing section. Also make sure that you update your 1sc settings so all the notifications get sent to this email address. Refer this troubleshooting guide step by step for any 1sc -> dap integration issues.
http://digitalaccesspass.com/doc/troubleshooting-1shoppingcart-clickbank-integration/