sidereal.ca

Valid Email Server
Domain Lookup › sidereal.ca
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
sidereal.ca
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-27 19:01:50 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • in2-smtp.messagingengine.com
  • in1-smtp.messagingengine.com

MX Priorities

  • in2-smtp.messagingengine.com: 20
  • in1-smtp.messagingengine.com: 10

A / AAAA Records

  • 104.21.81.148
  • 172.67.162.60
  • 2606:4700:3033::6815:5194
  • 2606:4700:3030::ac43:a23c

Mail Server IPs

  • 202.12.124.219 ↩ stl-mx-04.messagingengine.com
  • 202.12.124.217 ↩ stl-mx-02.messagingengine.com
  • 202.12.124.216 ↩ stl-mx-01.messagingengine.com
  • 202.12.124.218 ↩ stl-mx-03.messagingengine.com
  • 103.168.172.219 ↩ phl-mx-04.messagingengine.com
  • 103.168.172.223 ↩ phl-mx-08.messagingengine.com
  • 103.168.172.218 ↩ phl-mx-03.messagingengine.com
  • 103.168.172.221 ↩ phl-mx-06.messagingengine.com
  • 103.168.172.216 ↩ phl-mx-01.messagingengine.com
  • 103.168.172.217 ↩ phl-mx-02.messagingengine.com
  • 103.168.172.220
  • 103.168.172.222

SOA Record

Raw SOA evan.ns.cloudflare.com dns.cloudflare.com 2410546965 10000 2400 604800 1800
Primary NS (mname)
evan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2410546965
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

may.ns.cloudflare.com
evan.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.messagingengine.com include:postal.voipinterface.net mx -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 include:spf.messagingengine.com include:postal.voipinterface.net mx -all
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for sidereal.ca

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits