PayPal Payment not Posting to WHMCS

[MikeDVB]

Hello, I have been using WHMCS since version 3.50 and I was told in this version to set up the IPN, in the newer versions it is advised that you not do so in case you want to sell something else, but I've not removed it (and I honestly cannot remember where to remove it from in PayPal)

 

At any rate, I had a customer come to their invoice on WHMCS and make the invoice payment that was due and I have gotten *NOTHING* in my gateway log, or transaction list and I had to mark the invoice paid manually.

 

Was there a change to the IPN callback URL with 3.6.1 (current verison we are running) that would cause this callback to not be received if the old callback url was set in PayPal?

 

Or is there something else I should look into?

 

Thanks!

 

Edit:

I found out where to change the IPN and it was listed as:

http://www.mydomain.com/whmcs/modules/gateways/callback/paypal.php

 

Should I go ahead and clear this?

[chickendippers]

Profile > Instant Payment Notification Preferences.

 

We've got the IPN URL set to /modules/gateways/callback/paypal.php and everything seems to be running fine.

[Matt]

As long as IPN is enabled, it doesn't matter what you put for the URL - it's ignored anyway as WHMCS passes the URL it wants PayPal to use at the time of the payment request. There haven't been any changes to IPN callbacks in recent versions - url or otherwise.

 

Common problems are subscriptions not setup through WHMCS - they might not have any callback or callback to the URL as it was set when they were first created (ie. another app). Another common issue is moving a WHMCS install so the callback URL then changes, but the callback URL for existing subscriptions cannot be updated or changed. On rare occasions you sometimes find mod_security is blocking callbacks or your servers firewall is blocking access from the PayPal IPs. And then failing all of that, you've got random issues like this one recently that happen from time to time: http://www.theregister.co.uk/2008/05/17/paypal_ipn_meltdown/

 

Matt

[MikeDVB]

Ah, well the installation has not moved, it's not a subscription but the user opted to log in and make the payment once every three months. His last payment with 3.5.1 was processed correctly but his latest one was not. I had a person subscribe the other day and for the subscription creation in the gateway log it said incomplete but it showed the subscription payment as complete. Not sure if that has anything to do with it.

 

I guess I'll have to wait and see if this occurs again.

[dordal]

Common problems are subscriptions not setup through WHMCS - they might not have any callback or callback to the URL as it was set when they were first created (ie. another app). Another common issue is moving a WHMCS install so the callback URL then changes, but the callback URL for existing subscriptions cannot be updated or changed.

Matt

 

If you know what the old URL was supposed to be, you can usually setup a 301 redirect in your Apache .htaccess file to redirect the paypal IPN requests from the old URL to the new URL. We're doing this, having come from ClientExec. Google '301 redirect .htaccess' for more info.

 

Also, you most definitely do want to set the IPN callback in your paypal preferences. If you have subscriptions that don't have an IPN hard-coded, PayPal will use that.

[JasonO]

You could check your logs and filter it for paypal.com or paypal's ip and see what script its trying to call (if the IPN script no longer exists, then it will probably be in the 404 log). Then as the above post suggests, a htaccess redirect could then be done.

[apollo1]

Had someone pay an invoice today, and no PayPal call back. I've had nothing in my gateway log since March. What the hell is going on? I wonder if having changed the location of the admin folder is causing this.

[apollo1]

UPDATE: Please see my post at http://forum.whmcs.com/showthread.php?t=12727 for a possible cause and solution to the PayPal IPN callback problem.