← Email domain reports

Email DNS records for sinteacjf.com.br

MX, SPF, DMARC and DKIM records published for sinteacjf.com.br. Domain age: 13 years.

Receives email: Yes Disposable: No Free provider: No SPF: Yes DMARC: No

sinteacjf.com.br can receive email: 1 MX record found. Authentication records found: SPF, DKIM. Not found: DMARC.

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 Not found No DMARC policy tells receivers how to handle messages that fail authentication.
DKIM Found (default) A DKIM public key is published under the selector default.

Last checked: 2026-11-15 (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 sinteacjf.com.br

  • 0 sinteacjf.com.br (177.38.229.10)

Email authentication records for sinteacjf.com.br

SPF record 
v=spf1 +a +mx +ip4:177.38.229.10 +ip4:177.38.229.9 +ip4:177.38.229.12 +ip4:177.38.229.0/28 +include:relay.mailchannels.net +a:construsite.construsite.com.br +construsite2.construsitebrasil.com.brinclude:_spf.onedns.com.br ~all
DKIM record (default) 
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0YwD9p/NtL1dYVyWNGcUxBcafa4XAI6I2El5u3Ijtyrg77575K40Nvr6EaV/OOSw5BohqLOY29hxEaG899q8UzUSgoXi4hYXl4rs14GNMSByUhPWAh+n7l91V9W70ToZ3VHsexn83a6jSp19NFY0Op0iLOMQvy5QXI8iYxmc6e1+BjHrMU1lfcXgB5pofceCPH7UHlO4sK/4jj0LCDWbl/VYTr2l2lNDbKkJkblkKQ4hrQUMywBD2y5mCQZpNdujC8roYLDDkjJ/YCMONnZGXupYgfeYZIMAQZtno+Vvwu+LW4Gck7Qg5YgPX8O2c8s5K/8/vGrw9rmRD+5/ygaDUwIDAQAB;

Check a specific email address @sinteacjf.com.br

This page checks how sinteacjf.com.br is configured for email. It does not confirm that a specific mailbox exists — to check one address, use the form below.

Domain registration

Created2013-03-25
Updated2025-02-24
Expires2028-03-25

Server location

IP address177.38.229.10
Reverse IPconstrusite2.construsitebrasil.com.br
CountryBrazil
ASN28216

Name servers

NS 1ns2.construsitebrasil.com.br.
NS 2ns1.construsitebrasil.com.br.

TXT records for sinteacjf.com.br

TXT 1v=spf1 +a +mx +ip4:177.38.229.10 +ip4:177.38.229.9 +ip4:177.38.229.12 +ip4:177.38.229.0/28 +include:relay.mailchannels.net +a:construsite.construsite.com.br +construsite2.construsitebrasil.com.brinclude:_spf.onedns.com.br ~all

Frequently asked questions

Can sinteacjf.com.br receive email?

Yes. sinteacjf.com.br publishes 1 MX record, so it is configured to receive email. To know whether a specific address exists, verify that address.

Does sinteacjf.com.br use SPF and DMARC?

sinteacjf.com.br publishes an SPF record. It does not publish a valid DMARC record.

Is sinteacjf.com.br a free email provider?

No. sinteacjf.com.br is not on our list of free mailbox providers such as Gmail, Outlook or Yahoo.

Popular email providers

All domain reports →

Free email verifier →