Answers.Body: <p>I have been directed to this patch:</p>
  
  <p><a href="https://www.drupal.org/node/2177647" rel="nofollow">https://www.drupal.org/node/2177647</a></p>
  
  <p>I can't tell you whether it works or not yet since it will take a few weeks to be sure. But it seems to be the going solution. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-12T03:19:03.563Z
Answers.Text: Testing PayPal IPN via their test console, I was able to make IPNs to non-Pantheon sites, but not to a Pantheon site.
Answers.UserDisplayName: Chris Burgess
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-12T10:07:57.827Z
Answers.Text: **Pantheon > (your site) > Live > Errors** says "session_start(): Failed to initialize storage module: user (path: )sites/all/modules/civicrm/extern/ipn.php:34" which matches what's reported in [#2177647: on Pantheon: php error: session_start(): Failed to initialize storage module](https://www.drupal.org/node/2177647).
Answers.UserDisplayName: Chris Burgess
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-12T12:06:37.820Z
Answers.Text: https://issues.civicrm.org/jira/browse/CRM-17212
Answers.UserDisplayName: Chris Burgess
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-08-25T15:14:14.243Z
Answers.LastActivityDate: 2015-08-25T15:14:14.243Z
Answers.UserDisplayName: TheBarnacle
Body: <p>I recently moved our site to the Pantheon platform. The domain is the same (except the 'www' is now default where previously non-www was the default).</p>
  
  <p>But we have just received this email from Paypal:</p>
  
  <blockquote>
    <p>Dear so-and-so,</p>
    
    <p>Please check your server that handles PayPal Instant Payment
    Notifications (IPN). Instant Payment Notifications sent to the
    following URL(s) are failing:</p>
    
    <p><a href="http://www.mysite.com/sites/all/modules/civicrm/extern/ipn.php?r" rel="nofollow">http://www.mysite.com/sites/all/modules/civicrm/extern/ipn.php?r</a>
    eset=1&amp;contactID=1495&amp;contributionID=1047&amp;module=contribute&amp;membershipID=627</p>
    
    <p>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. <strong>If this problem continues, IPNs may be
    disabled for your account.</strong> </p>
    
    <p>Thank you for your prompt attention to this issue.</p>
  </blockquote>
  
  <p>I tried accessing the address and got there without any trouble. Why might this be happening and how could it be fixed?</p>
  
Tags: <paypal><pantheon><ipn>
Title: Paypal IPN check fails on Pantheon
ThreadText: # Paypal IPN check fails on Pantheon
  
  (Asked by: username_0 on 2015-08-18)
  
  I recently moved our site to the Pantheon platform. The domain is the same (except the 'www' is now default where previously non-www was the default).
  
  But we have just received this email from Paypal:
  
  > Dear so-and-so,
  >
  > Please check your server that handles PayPal Instant Payment
  > Notifications (IPN). Instant Payment Notifications sent to the
  > following URL(s) are failing:
  >
  > <http://www.mysite.com/sites/all/modules/civicrm/extern/ipn.php?r>
  > eset=1&contactID=1495&contributionID=1047&module=contribute&membershipID=627
  >
  > 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.**
  >
  > Thank you for your prompt attention to this issue.
  
  I tried accessing the address and got there without any trouble. Why might this be happening and how could it be fixed?
  
  **Tags:** paypal, pantheon, ipn
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_0 on 2015-08-25. Score: 2
  
  I have been directed to this patch:
  
  <https://www.drupal.org/node/2177647>
  
  I can't tell you whether it works or not yet since it will take a few weeks to be sure. But it seems to be the going solution.
  
  > **Comments:**
  > **username_1**: Testing PayPal IPN via their test console, I was able to make IPNs to non-Pantheon sites, but not to a Pantheon site.  
  > **username_1**: **Pantheon > (your site) > Live > Errors** says "session_start(): Failed to initialize storage module: user (path: )sites/all/modules/civicrm/extern/ipn.php:34" which matches what's reported in [#2177647: on Pantheon: php error: session_start(): Failed to initialize storage module](https://www.drupal.org/node/2177647).  
  > **username_1**: https://issues.civicrm.org/jira/browse/CRM-17212  
  
  ---
  
  