Email DNS records for sulferraco.com.br
MX, SPF, DMARC and DKIM records published for sulferraco.com.br. Domain age: 26 years.
sulferraco.com.br can receive email: 1 MX record found. Authentication records found: SPF. Not found: DMARC, DKIM (among common selectors).
| Check | Result | What it means |
|---|---|---|
| MX | Found (1) | The domain is configured to receive email. |
| SPF | Found | The record ends with -all: mail from servers not listed should be rejected (hard fail). |
| DMARC | Not found | No DMARC policy tells receivers how to handle messages that fail authentication. |
| DKIM | Not found among common selectors | DKIM can only be confirmed with the selector used by the sender, so this does not mean the domain has no DKIM. |
Last checked: 2026-10-10 (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 sulferraco.com.br
- 0 mxcorp2.sercomtel.com.br
Email authentication records for sulferraco.com.br
SPF record
v=spf1 a ip4:200.155.34.0/24 ip4:200.155.63.0/25 include:spf-corp.sercomtel.com.br -all
Check a specific email address @sulferraco.com.br
This page checks how sulferraco.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
Created2000-07-19
Updated2021-07-06
Expires2031-07-19
Server location
IP address186.226.58.36
Reverse IPda02.sh15.net
CountryBrazil
ASN262954
Name servers
NS 1dns4.sercomtel.com.br.
NS 2dns3.sercomtel.com.br.
TXT records for sulferraco.com.br
TXT 1v=spf1 a ip4:200.155.34.0/24 ip4:200.155.63.0/25 include:spf-corp.sercomtel.com.br -all