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faq:email:why_mail_client_showing_ssl_certificate_expiration_warning

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faq:email:why_mail_client_showing_ssl_certificate_expiration_warning [2022/03/04 17:39] vikkifaq:email:why_mail_client_showing_ssl_certificate_expiration_warning [2022/03/07 11:17] (current) vikki
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 ====== Why is my mail client showing SSL expiration warning? ====== ====== Why is my mail client showing SSL expiration warning? ======
  
-AfterOffice uses SSL certificates that are issued by [[https://letsencrypt.org/getting-started/|Let’s Encrypt]] for all of our email servers, to support the secure SSL connections. Let's Encrypt has two main root certificate:+Lookafter uses SSL certificates that are issued by [[https://letsencrypt.org/getting-started/|Let’s Encrypt]] for all of our email servers, to support the secure SSL connections. Let's Encrypt has two main root certificate:
  
   * **DST Root CA X3**: An older root certificate that are trusted and recognised by older devices (e.g. Windows XP prior to SP3, MacOS below 10.12.1) and older mail clients (e.g. Windows Live Mail)   * **DST Root CA X3**: An older root certificate that are trusted and recognised by older devices (e.g. Windows XP prior to SP3, MacOS below 10.12.1) and older mail clients (e.g. Windows Live Mail)
faq/email/why_mail_client_showing_ssl_certificate_expiration_warning.1646386769.txt.gz · Last modified: 2022/03/04 17:39 by vikki