IPN notification not work in paypal standard subscription form.

[asscoate_dev]

<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">

<!-- Identify your business so that you can collect the payments. -->
<input type="hidden" name="business" value="{email}">

<!-- Specify a Subscribe button. -->
<input type="hidden" name="cmd" value="_xclick-subscriptions">
<!-- Identify the subscription. -->
<input type="hidden" name="item_name" value="Alice's Weekly Digest">
<input type="hidden" name="item_number" value="DIG Weekly">

<!-- Set the terms of the regular subscription. -->
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="a3" value="5.00">
<input type="hidden" name="p3" value="1">
<input type="hidden" name="t3" value="D">

<!-- Set recurring payments until canceled. -->
<input type="hidden" name="src" value="1">
<input type="hidden" name="notify_url" value="{url}">
<input type='hidden' name='custom' value='dev123'/>

<!-- Display the payment button. -->
<input type="image" name="submit"
src="https://www.paypalobjects.com/en_US/i/btn/btn_subscribe_LG.gif"
alt="Subscribe">
<img alt="" width="1" height="1"
src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" >
</form>

[MTS_Justin]

Hello,

We experienced some issues with IPN related transactions in the past week and this issue was only solved on the 23rd November.

Please try again today and let me know if the issue persists.