If you've launched a campaign in Navigent but the replies you expected never show up in your inbox, there is one explanation that is far more likely than all the others combined:
Your MX records are pointing to the wrong place.
Every email you sent went out just fine, and recipients replied just fine — but their replies were delivered to a mailbox you aren't watching. In plain terms: you built the shop, but the mailbox is sitting at the old address.
This guide explains exactly what MX records are, how to check whether yours are correct, and precisely what to do if they aren't.
If you get stuck at any step, email info@navigent.io and I'll personally help you get it sorted.
An MX record is a DNS setting on your domain that tells the internet where to deliver your incoming email.
Think of it as an address forwarder: when someone sends an email to you@yourcompany.com, their server first looks up DNS and asks "hey, where should mail for yourcompany.com go?". The answer to that question is the MX record.
If you've moved your email from (for example) Outlook to Google Workspace — or the other way around — but forgot to update your MX records, here's what happens:
This is by far the most common cause of "my campaigns aren't working" — and it's 100% fixable.
You don't need to be a developer to check this. Open this free tool:
https://mxtoolbox.com/mxlookup
Type in your domain (e.g. yourcompany.com) and click MX Lookup.
You'll see a list of MX records. Look at the "Hostname" column:
| Your inbox is hosted at | MX must point to |
|---|---|
| Google Workspace | aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, etc. (always ending in .google.com) |
| Microsoft 365 / Outlook | <your-domain>.mail.protection.outlook.com (always ending in mail.protection.outlook.com) |
If your MX records don't match the provider you actually check mail with, that's the problem. Continue to Step 2.
MX records are changed at the company where you registered your domain — not at Google or Microsoft. Common domain registrars include One.com, Simply.com (formerly UnoEuro), GratisDNS, GoDaddy, Namecheap, and Cloudflare.
Log into your registrar's control panel and find the page called "DNS", "DNS records", or "Advanced settings".
Delete all existing MX records, then create this single one (simpler and fully supported):
| Type | Host | Value | Priority |
|---|---|---|---|
| MX | @ (or blank) | smtp.google.com | 1 |
Or, for redundancy, the full classic set:
| Type | Host | Value | Priority |
|---|---|---|---|
| MX | @ | aspmx.l.google.com | 1 |
| MX | @ | alt1.aspmx.l.google.com | 5 |
| MX | @ | alt2.aspmx.l.google.com | 5 |
| MX | @ | alt3.aspmx.l.google.com | 10 |
| MX | @ | alt4.aspmx.l.google.com | 10 |
Delete all existing MX records, then create this one:
| Type | Host | Value | Priority |
|---|---|---|---|
| MX | @ | <your-domain-with-hyphens>.mail.protection.outlook.com | 0 |
The exact hostname is shown inside your Microsoft 365 Admin Center under Settings → Domains.
If you need to move your email from Outlook / Microsoft 365 back to Google Workspace (the most common situation I see), here's the exact order to follow. Do it step-by-step — don't skip any.
First we tell Google that your inbox also owns your old email address.
hi@yourdomain.com). This is your admin console.@ in your old address (e.g. info, contact, whatever you used).Google is now ready to catch mail sent to your old address.
hi@yourdomain.com.This is the critical step — here we redirect mail traffic to Google. The instructions below are for One.com, but the principle is identical at every registrar.
MX (the ones currently pointing to Outlook) and click the trash icon next to each one to delete them all.@.smtp.google.com1Be patient. DNS changes typically take between 15 minutes and 24 hours to propagate globally. During that window some mail may still land in your old Outlook — totally normal. Check again tomorrow.
Last step — import your old mail history (and anything that arrives in Outlook during the propagation window) into your new Gmail.
Google will now pull all your old mail across in the background. Close the window and keep using Gmail normally while it runs. When it's finished, everything lives in one place and you can close Outlook for good.
After 24 hours:
aspmx.l.google.com).If the test passes, you're ready to run real campaigns again.
If you've followed the guide and something still isn't right (mail going to spam, MX not propagating, a registrar with a weird DNS panel you can't figure out), don't waste hours wrestling with it alone.
Email info@navigent.io.
Send me your domain and a short description of where you're stuck, and I'll look at your setup personally and fix it with you.
Written by
Founder of Navigent
Building the AI-powered B2B revenue engine for sales teams that want pipeline without the SDR overhead. Writing about cold email deliverability, AI personalization, and what actually works for outbound in 2026.