Business & finance3 min read
What Is a SAM.gov Unique Entity ID (UEI)?
Understand the U.S. federal Unique Entity ID, how SAM.gov uses it for entity identification and federal awards, and DSDillon’s published UEI.
DSDillon Insights / 66 published articles
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Showing 37-45 of 66 articles
Business & finance3 min read
What Is an EIN and Should a Business Publish Its Tax ID?
Understand the IRS Employer Identification Number, where businesses use EINs, and why DSDillon does not publish its federal Tax ID on the public website.
Business & finance3 min read
What Is FIUTT Motor Vehicle Sales Registration?
Understand FIUTT registration for motor vehicle sales in Trinidad and Tobago, the supervisory context, and DSDillon’s MVS/LB/132/2025 registration reference.
Business & finance11 min read
How to Register a Business in Trinidad & Tobago in 2026
A practical guide to choosing the correct Registry route, coordinating CRA and CROS participants, checking government fees and preparing for life after registration.
Business email11 min read
Should a Business Self-Host Email in 2026?
An architecture decision guide to hosted, self-hosted and hybrid business email: deliverability, operational ownership, security, recovery, cost and migration.
Executive security11 min read
What Is an Executive Risk Assessment?
How to scope an executive-security review, distinguish threat from exposure, evaluate evidence and commission a practical plan with owners, verification and review triggers.
Business email12 min read
How Do I Check My Email Domain Reputation?
Email domain reputation is provider-specific, not one universal score. This guide explains Gmail Postmaster Tools, Yahoo reputation factors, IP versus domain reputation, complaint rates, blocklists, low-volume limitations, new-domain behavior, recovery, and what evidence a real deliverability audit should collect.
Business email12 min read
How Do I Check Whether SPF, DKIM and DMARC Are Actually Working?
A reliable SPF, DKIM and DMARC check has to validate the DNS records and a real message. This guide explains SPF lookup limits, DKIM selectors and signatures, DMARC alignment, message headers, common failure modes, safe testing and what to verify across multiple sending systems.
Business email12 min read
How Do I Find My DKIM Selector?
A DKIM selector is the s= value used with the d= signing domain to locate a DKIM public key. This guide explains how to find selectors from real message headers, resolve the correct DNS record, handle multiple selectors and rotations, troubleshoot failures, and avoid breaking production email during migrations.
