[horde] Upcoming change: Horde Authentication Logs will no longer resolve client DNS

[Ralf Lang]

Hello,

this is a headsup: An upcoming version of horde/core will by default no
longer resolve the user's IP reverse DNS entry on certain events such as
authentication failure. This was previously not configurable.

We will document this behaviour in the registry config file

/**
 * Local overrides for registry configuration.
 *
 * Copy this file to registry.local.php and customize as needed.
 * This file is loaded after registry.php and can override any settings.
 *
 * See registry.php for available configuration options.
 */

// Example: Enable DNS resolution for client hostnames
// ----------------------------------------------------
// By default, DNS resolution is DISABLED for performance (blocking
// gethostbyaddr() calls can delay requests by 5-30 seconds on failures).
// Enable this if you need hostnames in logs instead of IP addresses.
//
// $this->applications['horde']['resolve_hostnames'] = true;