looks safe.
No — posteo.de does not appear to be a disposable email domain.
Data refreshed daily from live DNS.
| Priority | Mail server | IP addresses |
|---|---|---|
| 10 | mx01.posteo.de | 185.67.36.61, 185.67.36.62 |
| 10 | mx02.posteo.de | 185.67.36.73 |
| 10 | mx03.posteo.de | 185.67.36.63, 185.67.36.70 |
| 10 | mx04.posteo.de | — |
v=spf1 ip4:185.67.36.0/23 ip6:2a05:bc0:1000::/47 ~allv=DMARC1; p=none; sp=quarantine; adkim=s; aspf=sIs posteo.de a disposable email domain?
No — posteo.de does not appear to be a disposable email domain.
Should I block emails from posteo.de?
Probably not. posteo.de shows no disposable-email indicators. Check the risk signals above for anything unusual.
One GET request tells you if any email address is disposable, an alias, or undeliverable — before it hits your database.