Mailhandler cron failures with specific mailbox only.

Issue Summary

I'm having a problem where a second mailbox configured will throw back errors during cron. I'm using mailhandler in conjunction with listhandler to fetch mail from a pop3 mailbox.

The first mailbox configured functions correctly. The second one partially works - I can "test" it, which comes back with a successful connect status. I can also "retrieve" the mailbox, where I get a progress bar retrieving the correct number of messages from the inbox. However when I run cron, that particular mailbox fails with the following errors:

* warning: imap_open(): Couldn't open stream {localhost:110/pop3/notls}INBOX in E:\websites\mog_drupal\modules\mailhandler\mailhandler.module on line 193.
* warning: imap_close(): supplied argument is not a valid imap resource in E:\websites\mog_drupal\modules\mailhandler\mailhandler.retrieve.inc on line 621.

Please help me, this is driving me crazy!

I am coding this priority critical, as it does break mailhandler from working properly. However, since half of mailhandler is working, please re-prioritize if you need to.

Thanks

Aaron Bockelie

Here's an overview of my config:
Drupal 6.13
Access to update.php Protected
CAPTCHA Already 5 blocked form submissions
Configuration file Protected
Cron maintenance tasks Last run 0 sec ago
You can run cron manually.
Database updates Up to date
Drupal core update status Up to date
File system Writable (public download method)
GD library bundled (2.0.34 compatible)
IMAP Enabled
Mailhandler requires that PHP's IMAP extension is enabled in order to function properly.
Module and theme update status Up to date
MySQL database 5.1.36
PHP 5.2.10
PHP memory limit 512M
PHP register globals Disabled
Unicode library PHP Mbstring Extension
Update notifications Enabled
Web server Microsoft-IIS/6.0