Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
allisontransmission.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 10:31:24 UTC · ↺ Refresh
MX Hostnames
- mxb-00496e01.gslb.pphosted.com
- mxa-00496e01.gslb.pphosted.com
MX Priorities
- mxa-00496e01.gslb.pphosted.com: 10
- mxb-00496e01.gslb.pphosted.com: 10
A / AAAA Records
- 20.231.20.155 (no PTR)
Mail Server IPs
- 205.220.183.70 ↩ mx0b-00496e01.pphosted.com
- 205.220.171.70 ↩ mx0a-00496e01.pphosted.com
SOA Record
Raw SOA
ha1.markmonitor.zone hostmaster.markmonitor.com 2026030401 3600 600 604800 172800
Primary NS (mname)
ha1.markmonitor.zone
Admin Email (rname)
hostmaster@markmonitor.com
Serial
2026030401
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
172800s
Nameservers (NS)
ha3.markmonitor.zone
ha2.markmonitor.zone
ha4.markmonitor.zone
ha1.markmonitor.zone
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:74.113.50.0/24 ip4:107.20.210.250 ip4:52.1.14.157 ip4:205.220.171.70 ip4:205.220.183.70 include:spf.messagelabs.com include:_spf.qualtrics.com include:cmail1.com include:sendgrid.net include:spf.criticalimpactinc.com include:spf.protection.office365.us -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; sp=none; fo=1; ri=43200
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
15 records- globalsign-domain-verification=7E4219B288EA278EB32E2C690FA9A911
- MS=ms38250988
- webexdomainverification.M0ZU=c7d6c070-ceec-4e78-abbc-df654ed3d50c
- cisco-ci-domain-verification=5f5e2e65a60ee2157f25e8cf99412c2fa09b3bb55f0b6ad6fa0413b2eb3a161f
- apple-domain-verification=DVPvLsmHBcQDOJxU
- uFPG4cSd3LigCgROKXIAw3W/+DJFszpy5XkGX6kRANNSGTMX1hFkzNi6I6hsyCzo/WSjfH1csqdEfB4wFxe2CQ==
- MS=ms70087534
- spf2.0/pra a mx ptr include:spf.criticalimpactinc.com ~all
- PXFvvYj8kd5vYMfqiJznCKHuJ6r6mUdsSHf+BQB0qrWQIoqgytdthUXqfLBdsaAKW68h1RQHyfg61LAWRxYv0w==
- adobe-idp-site-verification=2c709614991ddf516e7044597d6fc8d4e398f4d60e6a018bb9b76eecebb5ed59
- MS=ms12915471
- SPFv=spf1 a mx ip4:74.113.50.0/24 ip4:107.20.210.250 ip4:52.1.14.157 ip4:205.220.171.70 ip4:205.220.183.70 include:spf.messagelabs.com include:_spf.qualtrics.com include:cmail1.com include:sendgrid.net include:spf.criticalimpactinc.com include:spf.protection.office365.us -all
- l0SADsTvzwWzaVTuCe1cRsGQQnZKRDz5AdyhUvhwa6/SBDYOMPtXti768NA3gvLEpbMGZtpIeCI6AJVLub3Ppg==
- 7E4219B288EA278EB32E2C690FA9A911
- MS=ms74383986
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