Email DNS records for u4u.biz
MX, SPF, DMARC and DKIM records published for u4u.biz.
Receives email: Yes Disposable: No Free provider: No SPF: Yes DMARC: Yes
u4u.biz can receive email: 1 MX record found. Authentication records found: SPF, DMARC, DKIM.
| Check | Result | What it means |
|---|---|---|
| MX | Found (1) | The domain is configured to receive email. |
| Free email provider | No | Not a free mailbox service like Gmail or Yahoo. |
| SPF | Found | The record ends with ~all: mail from servers not listed should be treated as suspicious but accepted (soft fail). |
| DMARC | p=none | The policy is none: receivers are asked to take no specific action on messages that fail DMARC. It is typically used to monitor authentication. |
| DKIM | Found (default) | A DKIM public key is published under the selector default. |
Last checked: 2026-10-24 (UTC). DNS records can change over time. This report lists public DNS records; their presence does not by itself mean that a domain or its messages are safe.
Next steps
MX records for u4u.biz
- 0 u4u.biz (139.99.255.61)
Email authentication records for u4u.biz
SPF record
v=spf1 +a +mx +ip4:139.99.150.7 ~all
DMARC record
v=DMARC1; p=none;
DKIM record (default)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy0iWpPOl7+f3C9lTcfYmXjG7s/vXHm0oXDlNJ+7H1IHwOIfOrvSu4YmpLj+rfb52IUwdj2/ooLyeAr7RYvCNugDqDXKNgZwxODSZvOqQFWlccE/0FhJAv3EvvOS0zfPhCR6r+EzeV0J2gCWwMtnInRaQROtZ4/DrMu/Cps/4lT9ZgIIxn5nVLoJrBvhqppVNDFm/DGta/xrKGZFNMZm6Ysp5WUl0eGQXYWFMa3d8HbdSKJ8DmO6+0AV3stSiPxxbIXk1CaVrpU4N1iAj/5A0hEPElc80UotaqUYvgEwS/RlpijjquVm+UEzYWmvB+Bn5k2fGLS7frzTVkj2PPnz3EwIDAQAB;
Check a specific email address @u4u.biz
This page checks how u4u.biz is configured for email. It does not confirm that a specific mailbox exists — to check one address, use the form below.
Server location
Name servers
TXT records for u4u.biz
Frequently asked questions
Can u4u.biz receive email?
Yes. u4u.biz publishes 1 MX record, so it is configured to receive email. To know whether a specific address exists, verify that address.
Does u4u.biz use SPF and DMARC?
u4u.biz publishes an SPF record. Its DMARC policy is p=none.
Is u4u.biz a free email provider?
No. u4u.biz is not on our list of free mailbox providers such as Gmail, Outlook or Yahoo.