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Email spoofing forges the visible "From" letterhead while SPF only checks the hidden envelope address, which is why SPF alone can't stop it. DMARC at p=reject closes this gap by requiring alignment between the two. BEC caused $3.05 billion in losses in 2025 per FBI IC3. Catch-all addresses increase spoofing-related risk.
Increase WordPress upload limits via cPanel's MultiPHP INI Editor: raise upload_max_filesize, then post_max_size to an equal or greater value, then memory_limit to match. Skipping post_max_size is the most common cause of silent upload failures and the "link you followed has expired" error.
NameSilo Domain Defender is a free security layer requiring up to 5 custom security questions before any domain-level change executes. Unlike 2FA, which secures login, Domain Defender secures the actions that happen after login, including transfers, unlocking, and WHOIS edits. Pair both for maximum protection.
Automate domain registration and DNS management via NameSilo's API using simple GET requests. Secure your integration with IP whitelisting (up to 5 IPs) in API Manager, and never expose your key in public repositories or client-side code. Full reference and sandbox testing available.
A DKIM selector identifies which public key to check in DNS, following the format selector._domainkey.yourdomain.com. Find it in your provider's admin console (Google Workspace defaults to "google"; Titan Mail shows it under Email Reputation) or by inspecting the s= tag in a raw email header.
Generate a CSR in cPanel: Security → SSL/TLS → Private Keys (2048-bit) → Certificate Signing Requests → fill in domain, company, and location fields. Copy the full BEGIN/END CERTIFICATE REQUEST block. Back up the private key immediately; losing it makes the issued certificate unusable.
Enable app-based TOTP 2FA to protect your domain portfolio; never use SMS, which is vulnerable to SIM-swapping, the primary method used in high-value domain theft. NameSilo offers free, app-only 2FA and recommends Authy for its secure backup. Pair with Domain Defender for domain-level change protection.
Block malicious IPs via cPanel Security → IP Blocker, which writes Deny rules directly into .htaccess. Accepts single IPs, ranges, and CIDR blocks. Applies globally across all domains on the account. Always verify your own IP first to avoid locking yourself out.
WHOIS contact roles: Registrant (legal owner), Administrative (business decisions), Technical (DNS/webmaster), and Billing. Agencies should only ever hold Admin or Tech, never Registrant, to avoid legal liability and protect client ownership. NameSilo opts customers out of the standard 60-day registrant-change lock by default.
Fake WHOIS data violates ICANN's Accuracy Program Specification and can trigger clientHold, taking your site and email offline. Registrant emails must be verified within 15 days. Skip the risk entirely with free WHOIS privacy, which protects your details without falsifying them.
RFC 1035 forbids CNAME records at a root domain because they conflict with MX and NS records. ALIAS, ANAME, and CNAME flattening are vendor-specific workarounds, not a DNS standard. NameSilo doesn't currently offer ALIAS/ANAME; use CNAME on www plus root forwarding, or delegate DNS to a provider like Cloudflare that supports it.
Warm up a new cold email domain over 4-8 weeks: start at 5-10 emails/day, scale to 40-50+ by week 6-8. Never send cold outreach from your primary corporate domain. Configure SPF, DKIM, and DMARC before day one. Favor vetted warmup tools over open shared engagement pools.
