Set up business email on IONOS (alternate flow): MX, SPF, DKIM & DMARC
Point IONOS (alternate flow) DNS at OquMail — copy-paste MX and TXT records, the exact menu path, and the mistake that breaks mail on IONOS (alternate flow).
Adding business email to a IONOS (alternate flow) domain is four DNS records — no nameserver change required. Here is exactly where IONOS (alternate flow) keeps its DNS editor, the values to paste, and the one IONOS (alternate flow)-specific gotcha to avoid.
Quick summary
- MX — host @, value mail.oqumail.com, priority 10
- SPF (TXT at @) — v=spf1 MX (Mail Exchanger — where incoming email is delivered) a:mail.oqumail.com ~all
- DKIM (TXT at your selector ._domainkey) — v=DKIM1; k=rsa; p=… (the exact key is shown in your OquMail dashboard)
- DMARC (TXT at _dmarc) — v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com
- Save the records — most hosts apply them within minutes.
Where IONOS (alternate flow) keeps DNS
Go to Menu → Domains & SSL → (domain) → DNS. You will add one MX records (the settings that tell the internet where to deliver email for your domain) and three TXT records (SPF, DKIM, DMARC).
The four DNS records OquMail needs
- MX — host @, value mail.oqumail.com, priority 10
- SPF (TXT at @) — v=spf1 MX (Mail Exchanger — where incoming email is delivered) a:mail.oqumail.com ~all
- DKIM (TXT at your selector ._domainkey) — v=DKIM1; k=rsa; p=… (the exact key is shown in your OquMail dashboard)
- DMARC (TXT at _dmarc) — v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com
The IONOS (alternate flow)-specific catch
IONOS may show an "email package" upsell — you do not need it. Add MX/SPF/DKIM/DMARC directly in the DNS table.
Verify it worked
- Save the records — most hosts apply them within minutes.
- Back in OquMail, open your domain and press "Check DNS" to re-verify.
- Send a test email in and out once all four records show green.
- If SPF fails, make sure there is only one SPF (TXT starting v=spf1) on the root.
Records recap
- MX → mail.oqumail.com (priority 10)
- SPF → v=spf1 MX (Mail Exchanger — where incoming email is delivered) a:mail.oqumail.com ~all
- DMARC → v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com
- DKIM → the selector + key shown in your OquMail dashboard
Common questions
How long does set up business email on ionos take for a small business?
Most teams finish domain connection and first mailboxes in under an hour. DNS propagation is often minutes; in rare cases wait up to 24–48 hours. OquMail shows live verification so you know when you are ready.
Do I need technical experience to set up business email?
No. If you can log into where you bought your domain and paste a few lines of text, you can set up professional email. OquMail guides you step by step and verifies when DNS is correct.
Can my small team use business email for free?
Yes. OquMail's free plan includes up to 15 mailboxes on your own domain with webmail, guided SPF/DKIM/DMARC setup, and a transactional email API — no credit card required.
Free business email on your own domain
OquMail gives you up to 15 mailboxes on your domain — free — with guided SPF/DKIM/DMARC, webmail, IMAP/SMTP for any mail app, and a send API. Most teams are live in under fifteen minutes. Start at oqumail.com.
Get started free