ATS Consulting

Email (Exchange Online)

Deliver mail reliably and protect your domain reputation.

Have you considered…?

  • Authentication & domain alignment. Do you know what SPF, DKIM, and DMARC are — and how to configure them (in DNS) so Microsoft 365 treats your mail as legitimate and your domains stay reputable?
  • Third-party senders. Have you safely authorized services that send mail on your behalf (marketing, payroll, ticketing) so they pass authentication instead of breaking it?
  • Spam vs. missed mail. Are anti-phish and anti-spam policies catching impersonation and high-confidence phish without burying legitimate messages? Should spam be quarantined or sent to Junk — and do your settings actually reflect that?
  • Spoofing gaps. Are your “allow” / “whitelist” mail-flow rules accidentally letting spoofed domains in — or are you confident they keep fake senders out while still allowing what’s legitimate?
  • Compromise awareness. If an account were suddenly compromised, would you know the first three actions to take (lock the account, cut off active sessions, revoke tokens) while help is on the way?
  • Signal & alerting. Are the right Microsoft alerts enabled, routed to someone who will act, and tuned to avoid noise fatigue?

Why this matters

Email is your brand’s front door. Weak authentication, loose exceptions, or noisy defaults hurt deliverability, invite spoofing, and waste time chasing “where did that message go?” A deliberate baseline reduces noise, protects your reputation, and makes support predictable.

How I help

  • Authentication baseline. SPF / DKIM / DMARC for each domain, aligned with any third-party senders you use, plus a simple domain matrix you can maintain.
  • Policy tuning. Anti-phish and anti-spam settings matched to your risk tolerance (quarantine vs. Junk), with clear rollback notes and documentation.
  • Exception hygiene. Review and tighten allow/deny rules so business exceptions don’t become security gaps.
  • Compromise support (balanced). If an account is breached, start fast with public guidance; ATS Consulting then verifies cleanup, closes backdoors, and documents what should change so it doesn’t happen again. See FAQ: compromised account.
  • Actionable alerts. Right-sized Microsoft alerting and routing so the right person sees the signal and responds.

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