Answers.Body: <p>While they sound quite different, I believe you are having the same problem as the person who <a href="https://civicrm.stackexchange.com/q/45782/12">asked this Stack Exchange question</a>.</p>
  <p>There's a strict standard for email, but not everyone follows it down to the very last detail.  CiviCRM uses &quot;Pear Mail&quot;, and I think you're experiencing <a href="https://github.com/pear/Mail/pull/24" rel="nofollow noreferrer">this bug</a>.</p>
  <p>You have a couple of options:</p>
  <ul>
  <li>If you have the choice to downgrade to PHP 7, <a href="https://github.com/pear/Mail/pull/24#issuecomment-1787004733" rel="nofollow noreferrer">this Github post</a> suggests that it should fix the problem.</li>
  <li>Pear Mail 2.0, released this week, fixes this problem.  CiviCRM <a href="https://github.com/civicrm/civicrm-core/pull/29035" rel="nofollow noreferrer">incorporated version 2.0</a> 2 days ago.  That puts it in the 5.71 release (March 6th, 2024).  You could wait and then upgrade.</li>
  <li>If you have a staff member or vendor who manages your CiviCRM, you could ask them to apply the patch right now.</li>
  </ul>
  <p>If none of those are viable, please reply in the comments - I can point to this and propose that this fix be moved up into version 5.70 (February 7th, 2024).  This isn't guaranteed to be accepted though, since it gives people less time to test the fix.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-01-19T16:14:21.313Z
Answers.LastActivityDate: 2024-01-19T16:14:21.313Z
Answers.UserDisplayName: Jon G - Megaphone Tech
Answers.Body: <p>We had this problem again in October 2024, and tried downgrading php to 7.4 (but without it solving anything). So we tested with Mailjet and that fixed the problem. We had also had a problem with another email domain that was rejecting emails and using Mailjet has fixed that too.  By the way, there is an extension to handle Mailjet email bounces, <a href="https://civicrm.org/extensions/mailjetty" rel="nofollow noreferrer">Mailjetty</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-11-22T10:29:52.423Z
Answers.LastActivityDate: 2024-11-22T10:29:52.423Z
Answers.UserDisplayName: Andy Clark
Answers.Body: <p>I am having this issue too - as I think many UK users will have as the email domains that are enforcing this are some of the largest in the country.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-01-22T20:42:48.037Z
Answers.Text: Oh, and I am running PHP 7.4
Answers.UserDisplayName: LSG
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-01-24T00:11:18.587Z
Answers.Text: pls do not use Answers as a way to say 'me too' - but perhaps you don't have the reputation yet to 'comment' (a weird requirement for StackExchange). If that is the issue then i can convert this to a comment for you
Answers.UserDisplayName: petednz - fuzion
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-10-03T16:30:19.310Z
Answers.Text: Running 5.74.4 and seeing this same problem today.  Is there an update on it?
Answers.UserDisplayName: Andy Clark
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-01-22T20:41:40.763Z
Answers.LastActivityDate: 2024-01-22T20:41:40.763Z
Answers.UserDisplayName: LSG
Body: <p>We use CiviCRM version 5.64.4 to send mail on our Drupal site.</p>
  <p>We have recently started having lots of email bouncing from btinternet, ntlworld and virgin email addresses. the reason given is:</p>
  <blockquote>
  <p>Remote host said: 552 5.2.0 Message contains bare CR and is violating 822.bis section 2.3</p>
  </blockquote>
  <p>We have been unable to trace any issues with the code in CiviCRM so far and have contacted virgin about this issue. We have not made any recent changes or updates to CiviCRM.</p>
  <p>Any suggestions?</p>
  
Tags: <civimail>
Title: bouncing emails to virgin emails with bare CR issue
ThreadText: # bouncing emails to virgin emails with bare CR issue
  
  (Asked by: username_0 on 2024-01-19)
  
  We use CiviCRM version 5.64.4 to send mail on our Drupal site.
  
  We have recently started having lots of email bouncing from btinternet, ntlworld and virgin email addresses. the reason given is:
  
  > Remote host said: 552 5.2.0 Message contains bare CR and is violating 822.bis section 2.3
  
  We have been unable to trace any issues with the code in CiviCRM so far and have contacted virgin about this issue. We have not made any recent changes or updates to CiviCRM.
  
  Any suggestions?
  
  **Tags:** civimail
  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_1 on 2024-01-19. Score: 2
  
  While they sound quite different, I believe you are having the same problem as the person who [asked this Stack Exchange question](https://civicrm.stackexchange.com/q/45782/12).
  
  There's a strict standard for email, but not everyone follows it down to the very last detail. CiviCRM uses "Pear Mail", and I think you're experiencing [this bug](https://github.com/pear/Mail/pull/24).
  
  You have a couple of options:
  
  * If you have the choice to downgrade to PHP 7, [this Github post](https://github.com/pear/Mail/pull/24#issuecomment-1787004733) suggests that it should fix the problem.
  * Pear Mail 2.0, released this week, fixes this problem. CiviCRM [incorporated version 2.0](https://github.com/civicrm/civicrm-core/pull/29035) 2 days ago. That puts it in the 5.71 release (March 6th, 2024). You could wait and then upgrade.
  * If you have a staff member or vendor who manages your CiviCRM, you could ask them to apply the patch right now.
  
  If none of those are viable, please reply in the comments - I can point to this and propose that this fix be moved up into version 5.70 (February 7th, 2024). This isn't guaranteed to be accepted though, since it gives people less time to test the fix.
  
  
  ---
  
  ### Answer by username_2 on 2024-11-22. Score: 1
  
  We had this problem again in October 2024, and tried downgrading php to 7.4 (but without it solving anything). So we tested with Mailjet and that fixed the problem. We had also had a problem with another email domain that was rejecting emails and using Mailjet has fixed that too. By the way, there is an extension to handle Mailjet email bounces, [Mailjetty](https://civicrm.org/extensions/mailjetty)
  
  
  ---
  
  ### Answer by username_3 on 2024-01-22. Score: 0
  
  I am having this issue too - as I think many UK users will have as the email domains that are enforcing this are some of the largest in the country.
  
  > **Comments:**
  > **username_3**: Oh, and I am running PHP 7.4  
  > **username_4**: pls do not use Answers as a way to say 'me too' - but perhaps you don't have the reputation yet to 'comment' (a weird requirement for StackExchange). If that is the issue then i can convert this to a comment for you  
  > **username_2**: Running 5.74.4 and seeing this same problem today.  Is there an update on it?  
  
  ---
  
  