I'm having a very similar problem, but can't seem to figure out the problem.
It seems to me that the "Scheduled Tasks > Manage" area has an option for pop3/imap mbox polling but this conflicts with the cronjob?
I also can't make the cronjob work. I've tried setting it up as a file in /etc/cron.d/, I've tried editing the webuser accounts personal crontab file (crontab -e), I've tried both the lynx and GET method quoted in the manual. still nothing.
When I attempt to use GET mydomain.com/support/cron/index.php?_t=parser, I get the following back to the root mbox:
<HTML>
<HEAD><TITLE>An Error Occurred</TITLE></HEAD>
<BODY>
<H1>An Error Occurred</H1>
500 EOF instead of reponse status line
</BODY>
</HTML>
The other methods do not produce any more descriptive error.
Also, when i attempt to access said file in a browser, it gives me "do you want to open index.php with..." dialog, if i use firefox, then it just keeps asking..
If I try accessing mydomain.com/support/cron/?t=parser (took out the underscore), then it gives me a 1x1 gif image with GIF89a (plus some wonkey characters) as data.
This is really really frustrating and help or assistance or comments would be very much appreciated. thanks.
I'm using:
Version: 3.00.81
Build Date: 20 May 2006 01:12:31 AM
Build Type: STABLE
PHP Version: 4.3.10
MySQL Version: 3.23.58
Server Software: Apache/1.3.33 (Unix) ApacheJServ/1.1.2 PHP/4.3.10
Operating System: Linux
