5 min
Fix Plesk Let's Encrypt certificate renewal failures
The daily "Could not issue/renew Let's Encrypt certificates" email hides five distinct failures. Match the real error string to the fix — HTTP-01, DNS TXT, wildcard, rate limit, or stale chain.
2026-06-27
3 min
cPanel & WHM v136: unified SSL, log retention, removals
cPanel & WHM v136 hits the RELEASE tier — unified SSL/TLS, short-lived ACME certs, web log retention, mass PHP version changes, Dovecot 2.4, and a list of removals to audit first.
2026-05-31
7 min
Install a Let's Encrypt SSL certificate on R1Soft Server Backup Manager
Replace the self-signed certificate on the R1Soft SBM web UI (port 8443) with a Let's Encrypt cert using acme.sh, a PKCS12 keystore, and a Tomcat connector reload.
2026-05-18
8 min
Change a cPanel WHM hostname without breaking license, mail, or SSL
A clean WHM hostname change takes 15 minutes if you do it in order. The mistakes that cost an afternoon — broken services SSL, license re-checks, mail HELO mismatches, and rDNS — all in one playbook.
2026-05-17
5 min
Fix WHM AutoSSL failures — a decision tree
AutoSSL fails in five distinct ways. Identify which one you're hitting from the WHM log line, then apply the fix — DNS, HTTP-01, CAA, rate-limit, or DCV redirect.
2026-05-15