Letsencrypt and smtpd certificate - Feedback for Zextras https://community.zextras.com/forum/feedback-for-zextras/letsencrypt-and-smtpd-certificste/ Zextras Community Discussion Board en-US Sat, 18 Apr 2026 00:46:29 +0000 wpForo 60 RE: Letsencrypt and smtpd certificate https://community.zextras.com/forum/feedback-for-zextras/letsencrypt-and-smtpd-certificste/#post-11917 Wed, 04 Feb 2026 08:58:14 +0000 psychik

You're right. The Admin Panel only handles certificates for the web services (webmail, admin interface). SMTP and LDAP have their own certificate files, and they don't get updated when you deploy LE from the panel.

Though, you can try manually applying the LE certificate to SMTP as:

  • Find the LE certificate files
  • Copy them over the existing SMTP certs
  • Fix permissions
  • Restart the services

Back up your certs before touching anything. And since LE expires every 90 days, you'll either need to repeat this manually or script it. 

 

]]> Feedback for Zextras Sharif https://community.zextras.com/forum/feedback-for-zextras/letsencrypt-and-smtpd-certificste/#post-11917 Letsencrypt and smtpd certificate https://community.zextras.com/forum/feedback-for-zextras/letsencrypt-and-smtpd-certificste/#post-11885 Mon, 19 Jan 2026 10:34:27 +0000 When you issue a LE certificate from the web panel, the smtpd.crt and slapd.crt certificates remain self-signed.

This causes some SMTP clients to reject the connection with a certificate error.

I think it would be a good idea to use the first domain's certificate as an option. Or add the ability to select the certificate that will be used for SMTP in the web panel.

]]> Feedback for Zextras psychik https://community.zextras.com/forum/feedback-for-zextras/letsencrypt-and-smtpd-certificste/#post-11885