pop3/novalidate-cert
I had the same Error Message.
Running osticket 1.7 on PHP 5.3, polling mails via pop3
Account Details and Mailserver were correct.
This Post:
http://osticket.com/forums/showpost.php?p=16182&postcount=4(http://osticket.com/forums/showpost.php?p=16182&postcount=4)
pointed me in the right direction.
But changing the mentionend line didnt help.
After checking imap-open on php.net i stumbled upon the /notls Switch
and i remembered that TLS is one Feature which the mailservers of my hoster do not Support.
So i changed the /include/class.mailfetch.php
From:
$this->srvstr.='/novalidate-cert}';
To:
$this->srvstr.='/notls}';
// $this->srvstr.='/novalidate-cert}'
After that mail fecthing was working.
Hope this helps.