Support

Joomla! version: 1.5.26
PHP version: 5.3.16
MySQL version: 5.1.63-cll
Host: nethotel.at
Admin Tools version: 2.2.9

Description of my issue: I have issues with another component (nBill) that cannot process incoming paypal payments automatically. The developer said, that it is not an issue of nBill but of some security settings on my server. That's why I am asking you, if your Admin Tools are blocking IPN callbacks in any way?

Here are the last two replys of nBills developer, maybe they help you to understand the issue?
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The conflict is not with nBill, it is with Paypal's IPN callbacks. I can understand your scepticism, as it may sound like I am 'passing the buck'. To demonstrate the problem, if you open the attached page with a browser, you can perform a spoof IPN callback.
I don't know if Admin Tools Professional will intercept these callbacks or not - usually when an HTTP response code of 403 is quoted in an error, that indicates the Apache server software is rejecting the page request, but it is possible that another security tool could hijack the Apache response codes. Perhaps you can temporarily disable ATP while you do a spoof post and see if that resolves it?
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The fact is there is no problem in nBill. Over 1000 people are using nBill, most of them with Paypal, and nobody else is experiencing this issue. The IPN spoof demonstrates that nBill is processing callbacks correctly. There must be some issue with the connection between Paypal and your server. Last time I tested it, as I said before, your server was responding with a 'forbidden' error, but still sending a 200 status code to Paypal. This is likely due to some security feature of your hosting, but that is outside of my control

Any idea if your component causes this issue?

Regards,
Michael

The answer of the author of nBill: "It is handled through Joomla's index.php file."

Hello,
sorry for the delay. It was very hard to find somebody who was willing to test my site with his paypal account.
The result: PayPal Payments work when Admin Tools are turned off by disabling the admin tools plugin. When Admin Tools are active, PayPal Payments cannot be processed automatically. The issue can be replicated easily with activated admin tools plugin.

But I am afraid, that troubleshooting will not be easy, because your WAF did not produce any security exceptions log, though it seemed to block something.

Here are the details:

With disabled admin tools, the nBill component processed the paypal payment immediately and correctly. BUT it produced two runtime error messages like this:

Im Frontend von nBill ist ein Fehler aufgetreten. Genauere Informationen unten:



Billing Version:

Service Pack:

Domain: http://nethotel.at

Date/Time: 08-Oct-2012 06:10:39 am

IP Address: 173.0.81.1

Page: http://nethotel.at/index.php?option=com_nbill&action=gateway&task=ipn&gateway=paypal&Itemid=1

Referrer:

Error Log ID: 4

Error Message: date() [<a href='function.date'>function.date</a>]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EDT/-4.0/DST' instead

File Name: /home/nethotel/public_html/administrator/components/com_nbill/framework/classes/nbill.common.class.php

Line Number: 1182

PHP Version (and OS): 5.3.16 (Linux)

CMS: Joomla!

CMS Version: 1.5.x

and

Im Frontend von nBill ist ein Fehler aufgetreten. Genauere Informationen unten:



Billing Version:

Service Pack:

Domain: http://nethotel.at

Date/Time: 08-Oct-2012 06:10:39 am

IP Address: 173.0.81.1

Page: http://nethotel.at/index.php?option=com_nbill&action=gateway&task=ipn&gateway=paypal&Itemid=1

Referrer:

Error Log ID: 5

Error Message: mktime() [<a href='function.mktime'>function.mktime</a>]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EDT/-4.0/DST' instead

File Name: /home/nethotel/public_html/administrator/components/com_nbill/framework/classes/nbill.common.class.php

Line Number: 1177

PHP Version (and OS): 5.3.16 (Linux)

CMS: Joomla!

CMS Version: 1.5.x

.

When admin tools is active, nBill does neither process paypal payments nor send out runtime error messages!
Admin Tools seemed NOT to produce any security exceptions log, though I set "YES" in the configuration as you told me to do. The WAF Exceptions Log seems to be completely empty.

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