smartfield.ru
Needs attention · latest saved observation 2026-10-23 13:29 UTC
History starts 2026-10-05 16:52 UTC. 19 daily snapshot(s) shown. Public-domain observations are a separate group from the Tranco top-1M study.
Next check due: 2026-10-24 13:29 UTC
What to review
Publish a DMARC policy and collect reports before tightening enforcement.
Public DNS; up to 2 inbound MX hosts, 5 public IPv4 addresses for IP blocklists and 3 for PTR. STARTTLS and TLSA concern the primary MX. IPv6, actual sending IP, DKIM and real message placement are not measured by this watch.
Email infrastructure
Published · ~all
v=spf1 redirect=_spf.yandex.netNo DMARC record observed
Domain policy for messages that fail aligned authentication.1 inbound mail record(s)
10 mx.yandex.netCoverage complete · HTTPS HTTP 200 · HTTP HTTP 200
HTTPS redirects 0 · HTTP redirects 1 · HTTPS endpoint smartfield.ru:443 · certificate authorized · valid until 2026-12-18T07:34:03.000Z · observed 2026-10-23T13:29:15.439Z1/1 sampled MX IPs measured · 1 forward-confirmed
77.88.21.249: mxfront.stable.qloud-b.yandex.net (ok)0 listed · 3 not listed · 0 unavailable
Spamhaus DBL: clean; SURBL: clean; URIBL: clean0 listed · 1 not listed · 5 unavailable
77.88.21.249 / Spamhaus ZEN: clean; 77.88.21.249 / Barracuda: unavailable (DNS check unavailable); 77.88.21.249 / SORBS: unavailable (source health is unverified); 77.88.21.249 / SpamCop: unavailable (DNS check unavailable); 77.88.21.249 / Mailspike: unavailable (source health is unverified); 77.88.21.249 / UCEPROTECT-1: unavailable (DNS check unavailable)Certificate trusted · 142 days until expiry
Primary MX: mx.yandex.net. Certificate expires Mar 14 20:59:59 2027 GMT.Unknown — policy check unavailable
TXT discovery: missing. Full policy validity and all MX matches are not certified.No TLSA record observed
Presence check on the primary MX only; DNSSEC and certificate matching are not validated.DNS records, explained
Observed 2026-10-23 13:29 UTC. These are the exact owner names queried.
A · smartfield.ru
IPv4 destinations for this DNS name. An address change can reflect a CDN or load balancing; it does not by itself prove a hosting move.
1 value(s) shown
Show observed values
176.57.65.18
AAAA · smartfield.ru
IPv6 destinations for this DNS name. They do not identify the IP that sends your email.
No record returned by the checks completed
MX · smartfield.ru
Servers advertised to receive mail for this name. Lower numbers have higher preference. They do not identify your outgoing sender.
1 value(s) shown
Show observed values
10 mx.yandex.net
NS · smartfield.ru
Name servers published for DNS delegation. Check intended DNS changes with your domain operator.
2 value(s) shown
Show observed values
ns1.reg.ru
ns2.reg.ru
SOA · smartfield.ru
Zone administration and refresh settings. The serial identifies a zone version; it is not necessarily a timestamp.
1 value(s) shown
Show observed values
ns1.reg.ru · serial 1792046164 · refresh 14400s · retry 3600s · expire 604800s
CAA · smartfield.ru
Published restrictions on certificate issuance. Presence alone does not prove HTTPS is configured correctly.
No record returned by the checks completed
TXT · smartfield.ru
Text declarations, including SPF and domain verification. A verification token is not evidence that a mail or SaaS service is actively used.
3 value(s) shown
Show observed values
v=spf1 redirect=_spf.yandex.net
yandex-verification: b5ac4e88608ae8dd
google-site-verification=wgRF_WPzlxsvBjpx9oAs7jP59RgHDGadLMz9YGsx3U0
Public recursive DNS observations, up to 24 values per type and 512 characters per value. TXT verification tokens show a published claim, not proof that a service is currently used. A/AAAA describe this DNS name; they do not establish the sending IP or a hosting migration. No DNSSEC validation or complete zone enumeration is claimed.
Compare saved snapshots
The comparison uses saved observations; the exact change time between them is unknown.
SOA changed between these observations
ns1.reg.ru · serial 1784713113 · refresh 14400s · retry 3600s · expire 604800s
ns1.reg.ru · serial 1792046164 · refresh 14400s · retry 3600s · expire 604800s
Zone administration and refresh settings. The serial identifies a zone version; it is not necessarily a timestamp.
TXT changed between these observations
google-site-verification=wgRF_WPzlxsvBjpx9oAs7jP59RgHDGadLMz9YGsx3U0
v=spf1 redirect=_spf.yandex.net
google-site-verification=wgRF_WPzlxsvBjpx9oAs7jP59RgHDGadLMz9YGsx3U0
v=spf1 redirect=_spf.yandex.net
yandex-verification: b5ac4e88608ae8dd
Text declarations, including SPF and domain verification. A verification token is not evidence that a mail or SaaS service is actively used.
Observation history
Up to 30 daily snapshots are retained. Missing days are not filled in; a gap is not evidence that records stayed unchanged.
- 2026-10-23 13:29 UTC
Needs attention
- 2026-10-22 13:29 UTC
Needs attention
- 2026-10-21 13:29 UTC
Needs attention
- 2026-10-20 13:29 UTC
Needs attention
- 2026-10-19 13:29 UTC
Needs attention
- 2026-10-18 13:29 UTC
Needs attention
- 2026-10-17 13:29 UTC
Needs attention
- 2026-10-16 13:29 UTC
Needs attention
- 2026-10-15 13:29 UTC
Needs attention
SOA records changed for smartfield.ru since 2026-10-14T13:29:20.778Z; exact change time unknown
TXT records changed for smartfield.ru since 2026-10-14T13:29:20.778Z; exact change time unknown
- 2026-10-14 13:29 UTC
Needs attention
- 2026-10-13 13:29 UTC
Needs attention
- 2026-10-12 13:29 UTC
Needs attention
- 2026-10-11 13:29 UTC
Needs attention
- 2026-10-10 13:29 UTC
Needs attention
- 2026-10-09 13:29 UTC
Needs attention
- 2026-10-08 13:29 UTC
Needs attention
- 2026-10-07 13:29 UTC
Needs attention
- 2026-10-06 13:29 UTC
Needs attention
- 2026-10-05 16:52 UTC
Needs attention
Keep an eye on the next change.
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