The New Email Reality for B2B Companies
Over the past two years, Google, Yahoo, and Microsoft implemented aggressive anti-spam enforcement rules for all custom domains. If your business domain lacks properly aligned authentication records, even 1-to-1 client proposals and invoices can be silently discarded or routed to spam folders.
1. SPF (Sender Policy Framework)
SPF specifies which mail servers are authorized to send email on behalf of your domain. A common mistake is having multiple SPF TXT records or exceeding the 10-DNS-lookup limit, which invalidates SPF completely.
2. DKIM (DomainKeys Identified Mail)
DKIM provides a cryptographic signature verifying that an email genuinely came from your domain and was not altered in transit. Always use 2048-bit DKIM keys configured directly in Google Workspace, Microsoft 365, or your mail provider.
3. DMARC: The Crucial Missing Piece
DMARC tells receiving mail servers what to do if SPF or DKIM checks fail. A domain without a DMARC policy is viewed with suspicion by automated spam filters. Setting up at least a monitor policy (p=none) with reporting (rua) is now the baseline requirement for reliable inbox delivery.
How OpsTrellis Can Help
Our 48-Hour Email Deliverability Sprint audits your domain, configures strict SPF/DKIM/DMARC alignment, and verifies inbox placement across 30+ seed mailboxes so your team never loses another business opportunity to spam.
Need help putting this into action?
OpsTrellis provides fixed-scope implementation sprints and fractional operational support for growing SMBs and modern enterprises. We handle the technical heavy lifting with zero disruption to your daily operations.