Issues with Paypal IPN

Sensei

Join Date:: Jan 2004
Posts:: 63,506
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Re: Issues with Paypal IPN

jimothyinnothy:
Warning: fsockopen() [function.fsockopen]: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution

You'll need to talk to your hosting company and ask them to configure their server's name resolution services properly, since the server cannot do nameserver lookups in order to access external servers.

24 Aug 2008, 21:35

#3

New Zenner

Join Date:: Aug 2008
Posts:: 16
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Re: Issues with Paypal IPN

DrByte:
You'll need to talk to your hosting company and ask them to configure their server's name resolution services properly, since the server cannot do nameserver lookups in order to access external servers.

That will present me with a little issue then, as this is my own box!! I suppose I had better get googling on this one then :(

Thanks chap.

25 Aug 2008, 17:49

#4

New Zenner

Join Date:: Aug 2008
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Re: Issues with Paypal IPN

All sorted now. Thanks for your help.
It was due to the server not being set up to resolve DNS, stumbled across it whilst trying to ping a domain name in the shell.

26 Aug 2008, 00:22

#5

sheehan

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Join Date:: Jun 2007
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Re: Issues with Paypal IPN

jimothyinnothy:
All sorted now. Thanks for your help.
It was due to the server not being set up to resolve DNS, stumbled across it whilst trying to ping a domain name in the shell.

Could you be a bit more specific about what you did to fix the problem? I have am having the exact same issue you had.

20 Nov 2009, 20:56

#6

New Zenner

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Re: Issues with Paypal IPN

Hello,
I am having the same issue. How did you solve this? It's really annoying my customers. I only happens to a few customers that I am aware of. Otherwise the transactions are going through.

Thanks!

20 Nov 2009, 21:03

#7

New Zenner

Join Date:: Aug 2008
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Re: Issues with Paypal IPN

The servers resolv.conf was not configured correctly, and on top of that fsockopen was not compiled into the apache/php config.
But to be honest, I have had this a few time recently, and it is always a variety of things that cause it. The last one was me calling an IP address instead of a URL for callback, and the IP address was made redundant by Paypal. Changed it to a dns based URL instead of an IP based one and it was fine.

If you get stuck, let me know and I will see if I can help.

20 Nov 2009, 21:10

#8

New Zenner

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Re: Issues with Paypal IPN

It's wierd because it only happens every once in a while. Mainly when people use their paypal accounts through express checkout.

So I need to talk to my hosting provider? Where did you find the ipn test script?

this is what Paypal told me:
PayPal found that my URL's are posting for the "RETURNURL" and "CANCELURL" values to be:
RETURNURL: https://xxxxxx.com/ipn_main_handler.php?type=ec"
CANCELURL: https://xxxxxx.com/index.php?main_page=login&ec_cancel=1

Did you have this?

20 Nov 2009, 21:20

#9

New Zenner

Join Date:: Aug 2008
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Re: Issues with Paypal IPN

Cant remember where it was on here, but if you at my profile and then look at my other messages, it will be on one of the threads in there.

If now I have uploaded it to a bit of webspace as a text file which you can then copy the contents of and upload to your space to run.
Will PM you the URL rather than posting it on here.

21 Nov 2009, 06:03

#10

Sensei

Join Date:: Jan 2004
Posts:: 63,506
Plugin Contributions:: 173

Re: Issues with Paypal IPN

The test tool mentioned is this one: http://www.zen-cart.com/forum/showthread.php?t=65680

24 Nov 2009, 15:45

#11

New Zenner

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Re: Issues with Paypal IPN

I used the test ipn tool and there weren't any errors. It seems to be communicating correctly. I asked Paypal why the customer is still getting sent back to a blank page and he told me to change the RETURNURL. What file is this in and how do I change it? I feel that I shouldn't need to play with the Paypal files. Any suggestions?

24 Nov 2009, 17:20

#12

ooba_scott

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Join Date:: Jul 2009
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Re: Issues with Paypal IPN

have you set up the return URL in the paypal backend?

If not you need to Log into Paypal, go to Profile - Website Payment preferneces

And turn on auto Return for website payments.

The return URL is usually something like the following:

http://www.my_domain.com/shop/index.php?main_page=checkout_process

Hope this helps :)

Scott

24 Nov 2009, 17:26

#13

New Zenner

Join Date:: Nov 2007
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Re: Issues with Paypal IPN

Hello,
Thanks for the response. I did that too. I have 2 stores that run on 1 paypal account. I set the return url for one of the store like I am supposed to. The customer will use express checkout to fill in their info. When they are done with that, they are supposed to be directed back to the store but instead some customers get sent back to a blank IPN main handler page and their transaction never goes through. Paypal was telling me to change the returnurl for the express checkout but I don't know where this is or how to do it. Thanks! Any suggestions?

24 Nov 2009, 17:29

#14

Sensei

Join Date:: Jan 2004
Posts:: 63,506
Plugin Contributions:: 173

Re: Issues with Paypal IPN

laisunshine:
The customer will use express checkout to fill in their info. When they are done with that, they are supposed to be directed back to the store but instead some customers get sent back to a blank ... page ...

So ... this is a problem with Express Checkout, and not with the "PayPal IPN" payment module (which this thread was originally discussing), right?

In that case, the problem is not the Return URL, but rather it's probably some sort of PHP error you're encountering, perhaps as a result of an incomplete file upload and/or a bad language/template file customization you've made.

FAQ on troubleshooting blank pages: https://www.zen-cart.com/tutorials/index.php?article=82
Article on enabling PayPal-specific debug logging: http://www.zen-cart.com/forum/showthread.php?t=61199

24 Nov 2009, 18:50

#15

New Zenner

Join Date:: Nov 2007
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Re: Issues with Paypal IPN

This is what Paypal told me:

"
You shouldn't want to change the IPN listener URL, you're receiving IPN posts fine and the IPN listener URL you have set up in your account doesn't effect the "RETURNURL" for Express Checkout. I don't know if you have access to the code, but if you do, find the "RETURNURL" you're passing in your "SetExpressCheckout" call. If you don't have access to the code, view the Express Checkout settings in your PayPal account and ensure you're passing the correct "RETURNURL".

The "RETURNURL" is not something that you can set in your PayPal account. Its set in the script you're sending to PayPal to process your Express Checkout transactions.

Like I said previously, if you have access to the code itself, find the script that's creating the request to PayPal and change the "RETURNURL". If you have a developer, have him or her do it for you. If the shopping cart software you're using doesn't allow access to the code, then you will have to go through their interface to change the "RETURNURL"." -Paypal

What do I do?

24 Nov 2009, 19:11

#16

Sensei

Join Date:: Jan 2004
Posts:: 63,506
Plugin Contributions:: 173

Re: Issues with Paypal IPN

Zen Cart is automatically setting the RETURNURL for you. It points to "www.your_store.com/ipn_main_handler.php?type=ec", which is the correct URL for a Zen Cart store.
There is no need to change it in the code.

As I said in my last post, if you're getting blank pages, you have a problem on your site to fix. It's not a PayPal issue.

24 Nov 2009, 19:57

#17