Email Security & Domain Infrastructure

Protect your domain. Keep your legitimate email moving.

Boutique Ink LLC helps professional-services firms, nonprofits and growing organizations reduce unauthorized use of their domains in spoofed email, restore legitimate email delivery and govern sending systems across Microsoft 365, Google Workspace and third-party platforms.

10+ years in email infrastructureMicrosoft 365 & Google WorkspaceWritten findings and change documentation

Services

Specialist investigation and controlled implementation for the systems behind your email.

The work begins with the business consequence—impersonation, blocked mail, unmanaged senders or an uncertain transition—and works backward to the right technical change.

Email Authentication & Domain Assessment

Inventory sending systems, evaluate authentication and DNS, and identify domain-control risks before they become security or delivery problems.

  • Sender and domain inventory
  • SPF, DKIM, DMARC and alignment review
  • DNS, registrar and administrative-access review
Explore the assessment

Email Deliverability & Authentication Troubleshooting

Diagnose blocked, rejected or misclassified email and correct the authentication, DNS or platform configuration causing it.

  • Delivery-failure and header analysis
  • Microsoft 365 and Google Workspace troubleshooting
  • Third-party sending-service remediation
Explore troubleshooting
Related platform support: Microsoft 365 and Google Workspace configuration, Microsoft Entra and Defender, DNS governance, third-party sender onboarding and email-platform migrations. View capabilities →

Representative engagement

Deploying Salesforce without weakening email authentication.

Salesforce + Microsoft 365 integration

A staged Salesforce Outlook rollout with email authentication work

An organization using Salesforce and Microsoft 365 needed the Salesforce Outlook Integration deployed in a controlled way while the domain’s email authentication was reviewed. Boutique Ink LLC reviewed Microsoft Graph permissions and tenant-consent requirements, then coordinated the rollout through a small pilot.

Problem
Deploy Salesforce Outlook Integration across Microsoft 365 without overlooking the new sending path
Intervention
Reviewed permissions, deployed a three-user pilot, added two DKIM CNAME records and updated SPF authorization
Verification
Outlook Web testing confirmed the Salesforce panel worked; the add-in was then deployed organization-wide

The result: a successful three-user pilot led to organization-wide deployment, with the related Salesforce authentication changes completed alongside the integration work.

Read the technical note

Who this is for

Useful when email has become someone’s problem—but no one’s clear responsibility.

Boutique Ink LLC works best with organizations that need experienced technical ownership for a defined email-security, delivery, or domain-control problem.

01

Professional-services firms and nonprofits

Organizations whose reputation, client communication, invoices, or donor relationships depend on legitimate email reaching its destination.

02

Teams with an MSP or internal IT

Environments where administrators can make changes but need a specialist to investigate the sending architecture, define the correction, and document the result.

03

Organizations facing a change

A new vendor, Microsoft 365 or Google Workspace transition, unexplained rejection, or pressure to move DMARC from monitoring into enforcement.

Usually not a fit: organizations looking for a generic managed IT provider, a dashboard without investigation, or a one-size-fits-all DNS change.

Approach

Measured changes. Clear reasons. No avoidable surprises.

Defined work first. Broader support when it is warranted.

  1. Discover

    Identify every system authorized to send on your behalf.

  2. Correct

    Repair authentication and alignment without interrupting valid mail.

  3. Enforce

    Advance policy deliberately, with evidence and rollback points.

  4. Govern

    Document ownership and keep later changes from eroding protection.

About

Practical judgment for complex email infrastructure.

Jonathan McMaster is the founder and principal consultant of Boutique Ink LLC, which provides hands-on email security and domain infrastructure consulting with clear ownership from initial investigation through implementation and documentation.

The work spans email authentication, DNS, Microsoft 365, Google Workspace, third-party sending systems and complex cross-vendor escalation. Engagements are carried from initial diagnosis through controlled implementation, verification and written handoff.

10+ years in email infrastructureHands-on with Microsoft 365 & Google WorkspaceEvery engagement documented in writing

Questions, answered

Clear guidance before any change is made.

What does an email authentication assessment include?

The assessment reviews your sending systems, SPF, DKIM, DMARC, DNS, domain ownership and administrative access. It ends with a written explanation of the material risks and the corrective steps worth taking.

Will changing DMARC interrupt legitimate email?

It can if unknown or misconfigured senders are moved too quickly into enforcement. The work is staged around reporting data so legitimate sending paths can be identified and corrected before policy is tightened.

What is DMARC, and why does it matter?

DMARC helps a domain owner tell receiving systems which messages are authorized to use the domain and what to do with messages that fail authentication. Properly implemented, it reduces impersonation risk and provides reporting about legitimate and unauthorized sending.

Can Boutique Ink LLC work alongside our internal IT team or MSP?

Yes. Engagements can be performed independently or in coordination with internal administrators, managed-service providers, DNS operators, software vendors and other technical partners.

Is administrative access required?

Not always. Initial diagnosis can often begin with public DNS records, DMARC reports, message headers and a description of the sending architecture. Administrative access is requested only when necessary for the agreed work.

Can you investigate one urgent delivery problem without beginning a full DMARC project?

Yes. A focused troubleshooting engagement can investigate blocked, rejected or misclassified mail and determine whether the cause is authentication, DNS, reputation, routing or platform configuration.

How long does an assessment or implementation take?

Timing depends on the number of domains, sending systems and required changes. A defined assessment can begin promptly, while implementation and enforcement are staged around the evidence needed to protect legitimate mail.

Data handling

Access is scoped to the work.

Boutique Ink LLC requests only the information and administrative access needed for the agreed engagement. Client information is used to investigate, implement and document the work; it is not sold or used for unrelated marketing. NDA arrangements are available when appropriate.

Start with the domain

Know what is sending—and what is exposed.

Request an email authentication assessment or describe the problem you are trying to resolve.

To help frame the conversation, include the domain involved, a short description of the problem and any known email platforms or sending services.