Is t-online.de a valid email domain?
t-online.de can receive email. It publishes 4 mail servers, and the first choice is mx03.t-online.de.
It is a free, public mailbox provider, and it is not on our disposable list.
SPF is published and ends with ~all. DMARC is set to none.
Check an email address at t-online.de
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | mx03.t-online.de | 194.25.134.73 |
| 10 | mx02.t-online.de | 194.25.134.9 |
| 10 | mx01.t-online.de | 194.25.134.72 |
| 10 | mx00.t-online.de | 194.25.134.8 |
SPF
Record published
v=spf1 ip4:194.25.134.16/28 ip4:194.25.134.80/28 ~all
DMARC
Policy: none
v=DMARC1; p=none; rua=mailto:dmarc-rua@rx.t-online.de
Disposable?
No, not on our disposable list.
Free provider?
Yes, a free public mailbox provider.
What this means for your email list
Is a free-provider address a problem?
Not by itself. t-online.de is a normal mailbox provider used by real people, and mail to it is delivered reliably. The thing to watch is whether the specific mailbox exists, which a domain check cannot tell you, so verify each address.
Sender authentication
t-online.de has DMARC in monitoring mode (p=none). It collects reports but does not yet block spoofed mail, so the domain is easier to impersonate.
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Sign up to get a report summary →Frequently asked questions
- Is t-online.de a valid email domain?
- Yes. t-online.de publishes 4 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is t-online.de a disposable email domain?
- No. t-online.de is not on our disposable list, but it is a free public provider. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for t-online.de?
- mx03.t-online.de (priority 10); mx02.t-online.de (priority 10); mx01.t-online.de (priority 10); mx00.t-online.de (priority 10).
- Does t-online.de have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy none.