Server Mode → Settings is the central configuration area for the Panel and the hosting stack running beneath it. Settings are grouped into categories — each controls a distinct aspect of the system.
Categories
Display / Branding
Customize the Panel's appearance: logo, company name, brand color, and custom CSS. If you are running Opterius under your own brand, this is where you configure it. See Display & Branding.
Mail Settings
Server-wide email configuration: default MX policy, SMTP relay for outbound mail, postmaster address, and the address the Panel uses for admin notifications. See Mail Settings.
Security Settings
Panel access controls: two-factor authentication enforcement, session timeout, admin IP allowlist, login attempt limits, and API access toggle. See Security Settings.
PHP Settings
Default PHP version and default php.ini values applied to new accounts. Admins set minimum and maximum allowed values to keep users from configuring dangerous limits. See PHP Settings.
DNS
PowerDNS integration settings: default nameservers, SOA email, TTL defaults, and DNSSEC configuration. See DNS Settings.
Notifications
Configure which events trigger admin alerts and which channels receive them (email, Telegram, Slack, Discord). See Notification Settings.
License
View your active license, plan tier, server and account limits, and expiry date. Enter or replace a license key. See Activating Your License.
Server Time
View server clock, timezone, and NTP sync status. Change timezone and force a sync. See Server Time.
Settings Scope
All settings in this section are server-wide — they apply to the Panel instance and the server it manages. They are not per-account settings. Account-level settings (disk quota, bandwidth, PHP version, etc.) are managed under Account Quotas and Packages.
Resellers do not have access to System Settings. This section is visible only to admin-role users.