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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
 
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