eNewsletter Bouncing Settings - Testing Connection

Hi there.

Me again. Test and love the update of the newsletter. Received this on a previous post but no clear answer was given when testing the Bouncing Emails.

<b>Warning</b>: imap_open() [function.imap-open]: Couldn't open stream {mail.xxxxx.co.za:110/pop3/notls/novalidate-cert/norsh}INBOX in <b>/home/xxxxxx/public_html/website/wp-content/plugins/e-newsletter/e-newsletter.php</b> on line <b>1560</b>
Can't open mailbox {mail.xxxxxx.co.za:110/pop3/notls/novalidate-cert/norsh}INBOX: invalid remote specification

Triple checked settings and confirm it works by login into webmail with the same detail.