Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
drfirst.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 16:43:57 UTC · ↺ Refresh
MX Hostnames
- mx0a-00308002.pphosted.com
- mx0b-00308002.pphosted.com
MX Priorities
- mx0a-00308002.pphosted.com: 10
- mx0b-00308002.pphosted.com: 15
A / AAAA Records
- 199.60.103.163 (no PTR)
- 199.60.103.63 (no PTR)
Mail Server IPs
- 205.220.162.144 ↩ mx0a-00308002.pphosted.com
- 205.220.174.143 ↩ mx0b-00308002.pphosted.com
SOA Record
Raw SOA
ns-1474.awsdns-56.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1474.awsdns-56.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1893.awsdns-44.co.uk
ns-280.awsdns-35.com
ns-692.awsdns-22.net
ns-1474.awsdns-56.org
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:205.220.174.143 ip4:205.220.162.144 include:_spf.sendergen.com include:sendgrid.net include:mailgun.org include:mail.zendesk.com include:24385719.spf03.hubspotemail.net ip4:209.160.238.25/32 ip4:207.114.91.18/32 ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=s; pct=25;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 25% of failing messages only
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
26 records- anthropic-domain-verification-2szsvb=tz41th49kXw4TcW1l7onnnw0U
- bcx096vn9f6h519jhmk23jy9vn135z9p
- loom-site-verification=266c75d7c73c4b4f9eb50e7d6de54312
- globalsign-domain-verification=1AF085C9EB6577F7889B1C15F8B2B192
- atlassian-sending-domain-verification=3feb2a58-1315-43a2-9dc9-0e7f7f27c830
- adobe-idp-site-verification=5f60cf537226f42abcff1734e4358b8cd452758da2f359fb99310dc7f32a87f5
- openai-domain-verification=dv-sRn7quUJ8pRePleeJZ27DNv6
- nJD74UFDpF_xvDZy65Qb5Le2NWtg72lZ
- 505772fe24c24dced3ee50ea02abe1a6ad68ee349096fa6bd1c1ac82e1311792
- zapier-domain-verification-challenge=0b3808d4-394b-4c08-9e0a-f0a4437ec6a0
- mixpanel-domain-verify=b307e8b7-3cdb-4e61-8fd4-e12aaef00ecb
- MS=ms72862453
- 4415764075d54a3182f38d51fdf95f1c
- dUZexotYLHoV8u4iTesIh5hfk3qMloXH6Z2P2P/V9x0/Twz+vUpXzT08GziS+grXdoYD7+HLUOl22nnlahMbgw==
- globalsign-domain-verification=5BA5A36C7D843FD9551D00A65A2A06CB
- intersight=086e99eeb2037d0166cf9e23268c8137307b526d64acb55589f231b376afb211
- apple-domain-verification=WryytAnu2bsLgGE6
- globalsign-domain-verification=8F7DC2618F424E3907008CDE16FBC38F
- MS=ms80104068
- northpass-domain-verification=a5094eb854947c9467d2bae425612576
- pendo-domain-verification=Bl2H9bJvrdX_p-lgj9XcoWCVJxM
- atlassian-domain-verification=FUiZoGqvtAaCDD/mV46UX6zV4uuklgq7dYZtETxNfrq4n5D1jc1qWh755ZV6SZaX
- SPFv=spf1 ip4:205.220.174.143 ip4:205.220.162.144 include:_spf.sendergen.com include:sendgrid.net include:mailgun.org include:mail.zendesk.com include:24385719.spf03.hubspotemail.net ip4:209.160.238.25/32 ip4:207.114.91.18/32 ~all
- google-site-verification=N-_mY0gL9URyKXH9xy81XceVDFREIjZcHMmIoFxpib8
- stripe-verification=52fe424893896df9666fb627557c71ab10c35d5b7c877ae1c777ed59acababd9
- jetbrains-domain-verification=7ot4rxq429hrso7v13kahkv40
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