Canonical: https://www.sdcom.co.za/it-tools
Text snapshot: 2026-10-31

Free checks · Clear next steps

# Free IT Tools for Your Business

Check an email domain, understand a message’s headers, compare Microsoft 365 plan needs or find the connection address your support team needs.

01 · Business email

## Email Domain Checker

Inspect public MX, SPF and DMARC records, with an optional DKIM selector lookup. No email address required.

[Check your email domain →](https://www.sdcom.co.za/email-domain-checker)

02 · A particular message

## Email Header Analyser

Understand the authentication claims and delivery path recorded in an email’s headers. Analysis stays in your browser.

[Analyse email headers →](https://www.sdcom.co.za/email-header-analyser)

03 · Choosing Microsoft 365

## Microsoft 365 Plan Guide

Answer a few questions and get an explained starting point for a licensing conversation.

[Find a starting plan →](https://www.sdcom.co.za/microsoft-365-plan-guide)

04 · Connectivity support

## What Is My IP?

Read and copy the connection address observed by our website when your support team asks for it.

[Show my connection address →](https://www.sdcom.co.za/what-is-my-ip)

## Start with the problem you recognise

My emails are not arriving or are going to junk

Start with the [domain checker](https://www.sdcom.co.za/email-domain-checker). If you have a particular message, use the [header analyser](https://www.sdcom.co.za/email-header-analyser) to read the receiving system’s reported results. Keep any bounce response for your administrator.

I’m unsure which Microsoft 365 plan we need

Use the [plan guide](https://www.sdcom.co.za/microsoft-365-plan-guide) to compare your team’s needs, then ask us to confirm the right combination and current offers.

Support has asked for our public IP address

Open [What Is My IP?](https://www.sdcom.co.za/what-is-my-ip) on the affected connection. A VPN or proxy may affect the address shown.

## Need help with the next step?

Bring the findings to StormDotCom. We can review the evidence, explain what matters and agree the scope of any work before it starts.

[Ask for IT help](https://www.sdcom.co.za/contact)

## Security and backup readiness

Answer six practical questions about endpoint protection, backup recovery and document access. Your answers stay in your browser.

[Show my next steps →](https://www.sdcom.co.za/security-backup-readiness?source=tools)