Answers.Body: <p>For SMTP Civi by default uses pear::mail, which uses Net_SMTP. The current version of Net_SMTP that civi has supports TLS 1.2. See <a href="https://github.com/pear/Net_SMTP/blob/18b5dbaa049bee5f6d02c9a4318db02472e2c922/Net/SMTP.php#L613" rel="nofollow noreferrer">https://github.com/pear/Net_SMTP/blob/18b5dbaa049bee5f6d02c9a4318db02472e2c922/Net/SMTP.php#L613</a></p>
  <p>It also depends on the version of the openssl extension you have installed in your php. If you run <code>php -i | grep -i openssl</code> or look at the output of phpinfo, you most likely have newer than openssl 1.0.1 so should be good.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-01-21T08:02:41.540Z
Answers.Text: Thanks, our installation is OK. I looked for the SSL version on https://<server>/admin/reports/status/php . (We use drupal 7).
Answers.UserDisplayName: Kainuk - CiviCooP
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-01-19T19:46:55.270Z
Answers.LastActivityDate: 2021-01-19T19:46:55.270Z
Answers.UserDisplayName: Demerit
Body: <p>I am using Mailgun for sending the email newsletters. I do not use the Mailgun API for sending, just the standard SMPT configuration. Now MailGun sends me the following, bit disturbing email:</p>
  <pre><code> Mailgun will no longer support TLS 1.0/1.1 
  </code></pre>
  <p>I assume CiviCRM uses a more recent version, but where can I find this?</p>
  
Tags: <civimail><smtp>
Title: Mailgun will no longer support TLS 1.0/1.1, does this affect CiviCRM Smtp
ThreadText: # Mailgun will no longer support TLS 1.0/1.1, does this affect CiviCRM Smtp
  
  (Asked by: username_0 on 2021-01-19)
  
  I am using Mailgun for sending the email newsletters. I do not use the Mailgun API for sending, just the standard SMPT configuration. Now MailGun sends me the following, bit disturbing email:
   Mailgun will no longer support TLS 1.0/1.1 
  
  I assume CiviCRM uses a more recent version, but where can I find this?
  
  **Tags:** civimail, smtp
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2021-01-19. Score: 1 | Accepted answer
  
  For SMTP Civi by default uses pear::mail, which uses Net\_SMTP. The current version of Net\_SMTP that civi has supports TLS 1.2. See <https://github.com/pear/Net_SMTP/blob/18b5dbaa049bee5f6d02c9a4318db02472e2c922/Net/SMTP.php#L613>
  
  It also depends on the version of the openssl extension you have installed in your php. If you run `php -i | grep -i openssl` or look at the output of phpinfo, you most likely have newer than openssl 1.0.1 so should be good.
  
  > **Comments:**
  > **username_0**: Thanks, our installation is OK. I looked for the SSL version on https://<server>/admin/reports/status/php . (We use drupal 7).  
  
  ---
  
  