How do I get a wildcard SSL certificate for all subdomains?
Use sudo certbot certonly --manual --preferred-challenges dns -d *.yourdomain.com -d yourdomain.com. Wildcard certificates require DNS-01 challenge (you add a TXT record to verify domain ownership). This covers all subdomains with one certificate.
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More FAQs in Domain Management Best Practices Renewals, Transfers, and Security
Enable auto-renewal at your registrar, register for multiple years (5 or 10), keep your payment method and contact email updated, enable renewal email reminders, and set up domain expiry monitoring with alerts 30, 15, and 7 days before expiry.
WHOIS privacy hides your personal information (name, email, phone, address) from public WHOIS lookups. It's free on most registrars. Enable it to protect your privacy and reduce spam. Check with whois yourdomain.com to see if your info is exposed.
Unlock the domain at the current registrar, get the authorization code (EPP code), initiate the transfer at the new registrar, approve via email, and wait 5-7 days. Don't transfer if the domain was registered in the last 60 days or expires in less than 7 days.
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