Authenticate Mailgun (TXT-based SPF/DKIM, optional MX/CNAME) or SendGrid (CNAME-based, typically 3 records) via NameSilo's DNS Manager. Always use a dedicated subdomain like mg.yourbrand.com, never your root domain, and never replace your existing MX records, which would break normal incoming corporate email.
A 550 5.1.1 error means the recipient mailbox doesn't exist, a permanent hard bounce, not a sender-side problem. Common causes: typos or a deleted account after an employee leaves. Remove the address from your list immediately after the first bounce to protect your domain's sending reputation.
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.
Free Gmail addresses damage business credibility, limit DMARC alignment for deliverability, and create a data ownership risk: the company has no legal access to an employee's personal inbox. Free email forwarding solves receiving but not sending. Custom business email costs little and solves all three problems.
Set server-side autoresponders in Titan Mail (Gear → Preferences → Vacation Responder) or Google Workspace (Settings → General → Vacation responder). Always set reply frequency per sender to prevent inbox floods. Client-side Outlook rules stop when your PC turns off.
DMARC p=quarantine routes failing messages to spam instead of blocking them. Use it as a 30-90 day testing phase after p=none. Start with pct=10, monitor rua reports, fix legitimate failures, then advance to p=reject. Add TXT record at _dmarc with rua tag.
Emails land in Outlook junk due to IP reputation, not just DNS records. Shared hosting IPs carry neighborhood spam history. Register at Microsoft SNDS to monitor your IP. Submit a mitigation request at sender.office.com if blocked. SPF, DKIM, and DMARC all required.
Create professional email signatures using your email client's editor or an HTML generator. Host logos via URL, never embed images locally or they appear as attachments. Include name, title, phone, and one CTA. Titan Mail offers a built-in Signature Designer with templates.
Learn why emails are delayed before delivery, including greylisting, DNS authentication, spam filtering, server queueing, and reputation issues.
Emails bounce due to hard bounces (invalid address, permanent) or soft bounces (full inbox, temporary). Read the NDR error message for the exact cause. Configure SPF, DKIM, and DMARC to prevent authentication rejections. Never retry hard bounces, it damages sender reputation.
DKIM records are generated by your email provider (Google Workspace, Microsoft 365, Titan Mail), not your registrar. Copy the public key and selector from your email dashboard, add it as a TXT record in DNS. DKIM proves emails weren't tampered with and improves deliverability.
Learn why you can receive emails but cannot send them, including SMTP issues, DNS problems, authentication failures, and email provider restrictions.
