PayPal Instant Payment Notification Warning

[sdf]

We keep receiving this email from Paypal:

---

Dear x,

Please check your server that handles PayPal Instant Payment Notifications

(IPN). Instant Payment Notifications sent to the following URL(s) are

failing:

[sitehere].com/wp-content/plugins/wp-affiliate-platform/api/ipn_handler.php

If you do not recognize this URL, you may be using a service provider that

is using IPN on your behalf. Please contact your service provider with the

above information. If this problem continues, IPNs may be disabled for your

account.

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What can I do to fix this before they disable our IPNs?

[amin007]

Basically, for some odd reason your server is blocking PayPal’s payment notification (IPN). Sometimes a plugin can do this too (I know that the “Bad Behavior” plugin does it for reasons I can’t explain). PayPal is a well known payment gateway so I don’t know why some servers or plugin block IPNs from PayPal.

You have three possible ways to fix this:

1) Contact your web hosting to find out why they are blocking PayPal IPN (maybe they have a firewall which is doing it). Maybe you are using a plugin that is blocking it (The bad behavior plugin is known to do this). Deactivate this plugin.

2) Don’t use the IPN feature.

3) Change your hosting provider and get a good one (there are plenty of good and cheap ones out there)

I prefer option 1

More details here:

https://support.tipsandtricks-hq.com/forums/topic/ipn-sent-to-wp-estore-are-failing

[sdf]

My hosting company (not a cheap one and not Godaddy ) is asking what port this function is using. Please let me know so that they can check their firewall settings. thanks

[amin007]

PayPal IPN uses standard HTTP POST so it will be on port 80.

Your hosting provider should know about PayPal’s IPN feature. It’s a PayPal feature for payment notification that pretty much any reliable shopping cart system uses. You can read more here:

WordPress e-Commerce Knowledgebase

If you go to sandbox and try to send a test IPN you can see that it fails to deliver to your server. I just tried to send a simple test IPN to the following URL and your server denied it:

http://www.sitehere.com/wp-content/plugins/wp-affiliate-platform/api/ipn_handler.php

[Author]

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