Is posteo.de a valid email domain?
posteo.de can receive email. It publishes 4 mail servers, and the first choice is mx02.posteo.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 posteo.de
Type the name before the @ to check a full address. No account needed.
MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | mx02.posteo.de | 185.67.36.73 |
| 10 | mx01.posteo.de | 185.67.36.62, 185.67.36.61 |
| 10 | mx04.posteo.de | 185.67.36.71, 185.67.36.64 |
| 10 | mx03.posteo.de | 185.67.36.70, 185.67.36.63 |
SPF
Record published
v=spf1 ip4:185.67.36.0/23 ip6:2a05:bc0:1000::/47 ~all
DMARC
Policy: none
v=DMARC1; p=none; sp=quarantine; adkim=s; aspf=s
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?
Addresses at posteo.de are legitimate and deliverable in general. What goes wrong is the mailbox part before the @: typos, old accounts and abandoned inboxes. That is what per-address verification catches.
Sender authentication
posteo.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 posteo.de a valid email domain?
- Yes. posteo.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 posteo.de a disposable email domain?
- No. posteo.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 posteo.de?
- mx02.posteo.de (priority 10); mx01.posteo.de (priority 10); mx04.posteo.de (priority 10); mx03.posteo.de (priority 10).
- Does posteo.de have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy none.