• We value your experience with Plesk during 2024
    Plesk strives to perform even better in 2025. To help us improve further, please answer a few questions about your experience with Plesk Obsidian 2024.
    Please take this short survey:

    https://pt-research.typeform.com/to/AmZvSXkx
  • The Horde webmail has been deprecated. Its complete removal is scheduled for April 2025. For details and recommended actions, see the Feature and Deprecation Plan.
  • We’re working on enhancing the Monitoring feature in Plesk, and we could really use your expertise! If you’re open to sharing your experiences with server and website monitoring or providing feedback, we’d love to have a one-hour online meeting with you.

Issue Unable to save filters in the Horde webmail: Failed to establish TLS connection

suyog@2509

New Pleskian
Server operating system version
centos7
Plesk version and microupdate number
obsidian
Unable to save filters in the Horde webmail: Failed to establish TLS connection ..Kindly help me resolve the same
 
A self-Signed SSL certificate is used along with PHP 5.6 to run the Horde webmail.
As a workaround, disable TLS encryption for sieve in the Horde configuration file:
  1. Open the file /usr/share/psa-horde/ingo/config/backends.php
  2. Find the section $backends['sieve'] = array(
  3. Change the record:
    'usetls' => true
    to
    'usetls' => false
  4. Save the file with changes.
  5. Create the additional Dovecot configuration file to specify "ssl=no" inside the "protocol sieve {}" section:
    # cat /etc/dovecot/conf.d/99-horde-sieve-tlsfix.conf
    protocol sieve {
    ssl = no
    }
  6. Restart Dovecot service:
    # service dovecot restart
 
Back
Top