Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
guard.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 21:43:09 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 172.212.70.136 (no PTR)
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns-16.awsdns-02.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-16.awsdns-02.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1803.awsdns-33.co.uk
ns-723.awsdns-26.net
ns-1466.awsdns-55.org
ns-16.awsdns-02.com
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=498nuj0t._spf._d.mim.ec
📊 DNS lookups: 1/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- 42mjjbt4r3vkof9psaql2nnebk
- 4r3bkbtb840l0b8rj8txqslnk0fpk36b
- apple-domain-verification=kEQ6ieYrR39ywdxl
- google-site-verification=atJIX5iMg64AGFx1RKb7LPQByfsqPMtbJQOm8E1og0U5jd8plbr5go3js8bqc0dela9it
- miro-verification=d52383e0a10a9321fa6862594086714e47c794be
- SPFv=spf1 redirect=498nuj0t._spf._d.mim.ec
- 1ZQZOIeu1PD3KcwKQDYiZnLh+hNHGvpqxvcFqjS6Z/Ct0DL7L5NzpHsRybs90sZFNUp355XZVunDTUxZxwB93A==
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