DirectAdmin license errors and update failures: da update, IP/hostname mismatches
Working through the license and update problems a DirectAdmin server can hit, from an expired or IP-bound licence to a da update that cannot reach the download servers, with the commands and log lines that identify each one.
September 29, 2026
DirectAdmin mail delivery problems: forwarder loops, send-limit counting and outbound MX lookups
Three DirectAdmin mail faults that surface as bounces or silent non-delivery, explained through Exim's mainlog, the per-user send-limit files, the forwarder loop protection added in 1.693 and the FORCED_MX_DNS_CHECK behaviour from 1.703.
September 29, 2026
DirectAdmin Certificate Not Renewing: Fix Failed Renewals
A diagnostic path for DirectAdmin domains whose certificates stop renewing under the ACME TLS system, from the Provisioning history page added in 1.710 through lego's error messages to the failure counter that silently disables a domain.
September 29, 2026
DirectAdmin DOCROOT Token Change 1.710: Fix Broken Templates
What DirectAdmin 1.710 changed in the web-server template tokens and subdomain aliasing, how to find custom templates that still use SDOCROOT or REALDOCROOT, and how to bring them in line without losing the customisations they carry.
September 29, 2026
MariaDB Slow Queries on 11/12: Diagnosis Steps
A working method for finding and fixing the queries that make a shared MariaDB server slow, using the slow query log with sensible thresholds, EXPLAIN and ANALYZE, the optimizer trace for the hard cases, and the optimizer hints introduced in 12.x to force a plan.
September 29, 2026
DirectAdmin 503 PHP-FPM Errors: Log Checks
Diagnosing 503 errors from PHP-FPM sites on DirectAdmin now that pool logs go to the systemd journal, covering exhausted workers, socket permission faults, per-user pool settings and the CustomBuild override that makes fixes survive rebuilds.
September 29, 2026
CSF CVE-2026-65638, 65639, 67402: Critical Patch Guide
What the three CSF vulnerabilities disclosed in August and September 2026 allow, which versions are affected, how to confirm a server is exposed, and the exact settings and versions that close each one on cPanel and standalone Linux servers.
September 29, 2026
CSF AlmaLinux 10: nftables and ipset Problems Fixed
Why CSF behaves differently on AlmaLinux 10 and other EL10 systems, how the iptables-nft compatibility layer changes rule handling, why ipset-backed blocklists fail, and the settings that keep LFD useful while you choose a longer-term fix.
September 29, 2026
“cPanel license is invalid”: troubleshooting manage2, IP changes and firewalls
What to check when WHM shows a licence error, including the licence server verification tool, IP mismatches after a migration, NAT and firewall blocks on the licence check, expired trials and stale manage2 entries, with the exact commands to confirm each cause.
September 29, 2026
cPanel Quotas Unlimited: fixquotas Repair
Why cPanel accounts show unlimited or zero disk usage after a migration, reboot or filesystem change, and how to repair user quotas on XFS and ext4 with fixquotas, mount options, quotacheck and the XFS project-quota caveats on AlmaLinux 9 and 10.
September 29, 2026
cPanel CVE Build Numbers 2026: Is Your Server Safe?
A reference for confirming a cPanel server is past each of the 2026 root-escalation and cross-account vulnerabilities, listing the fixed build per tier, how to read the version string, and what to do when a server is behind or on a retired tier.
September 29, 2026
caching_sha2_password MariaDB 12: Fix MySQL 8 Client Problems
MariaDB 12.1 and later support the caching_sha2_password authentication plugin that MySQL 8 clients expect; this guide explains the resulting errors in both directions, how to check which plugin each account uses, and how to make PHP, CLI tools and replication clients connect.
September 29, 2026