Broken PayPal IPN: .htaccess rewrite rule

[rockhost]

Hello,

 

Recently I migratedmy WHMCS install to a new url which has broken my PayPal IPN. Currently I have this redirect in place:

 

RewriteCond %{HTTP_HOST} ^rockandrollhosting.com$ [OR]

RewriteCond %{HTTP_HOST} ^www.rockandrollhosting.com$

RewriteRule ^clients\/?(.*)$ "http\:\/\/my\.rockhost\.com\/$1" [R=301,L]

 

However, there is one single url beneath the /client directory that I need to be an exception to the rule: https://www.rockandrollhosting.com/clients/modules/gateways/callback/paypal.php

 

I have Google'd myself googly eye'd without much luck. Any ideas?

 

Thanks!