Email Server IP Test
Check how a domain's email is set up. We look up the MX records and try to connect to the primary mail server on port 25. You'll see which servers receive mail for the domain and whether they're reachable.
Test Email Server
Enter a domain (e.g. gmail.com) to check MX and SMTP.
How to Use This Tool
Enter a domain name (e.g. gmail.com or your-company.com). We look up the MX records to find the mail servers, then try to connect to the primary server on port 25. We read the SMTP banner and report whether the connection succeeded. No email is sent.
Why This Tool Matters
Email delivery depends on MX records pointing to reachable servers. If your domain's MX is wrong or the mail server is unreachable, messages will bounce. This tool helps you verify the setup from an external perspective — the same way other mail servers will try to reach you.
Use Cases
- Verify MX records after changing email providers
- Check if your mail server is reachable from the internet
- Debug "messages not arriving" by confirming the receiving server is up
- Inspect another domain's mail setup before configuring SPF or DKIM
FAQs
What does the email server IP test do?
It looks up the MX records for a domain and attempts to connect to the primary mail server on port 25 (SMTP). You get the mail server hostnames, IPs (via MX), and whether the server accepts connections.
Why would I need this?
To verify your mail server is reachable from the internet, troubleshoot email delivery, or check another domain's mail setup before configuring SPF/DKIM.
What if no MX records are found?
The domain may not have email configured, or MX records may be missing. Some domains use A record fallback for mail.
Does it send an email?
No. We only connect to port 25 and read the SMTP banner. No email is sent.
Can I test my own domain?
Yes. Enter your domain (e.g. example.com) and we look up MX and try to connect to the primary server.