Domain Overview
DNS: ✓ 1d ago
Checker: ✓ 1d ago
symborg.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-07-01 15:58:11 UTC · ↺ Refresh
MX Hostnames
- mxb-0024af01.gslb.pphosted.com
- mxa-0024af01.gslb.pphosted.com
MX Priorities
- mxa-0024af01.gslb.pphosted.com: 0
- mxb-0024af01.gslb.pphosted.com: 10
A / AAAA Records
- 170.54.159.72 (no PTR)
Mail Server IPs
- 148.163.149.140 ↩ mx0a-0024af01.pphosted.com
- 148.163.153.139 ↩ mx0b-0024af01.pphosted.com
SOA Record
Raw SOA
augustus.ns.cloudflare.com dns.cloudflare.com 2404010423 10000 2400 604800 1800
Primary NS (mname)
augustus.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2404010423
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
augustus.ns.cloudflare.com
shaz.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +ip4:35.214.219.132 +ip4:35.214.159.39 +ip4:77.104.159.143 +include:spf.protection.outlook.com +include:mktomail.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
default._domainkey
dkim._domainkey
✓ Public key: 237 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- zscaler-verification-29331448-13082025-PTM1JY6BBn
- SPFv=spf1 +a +mx +ip4:35.214.219.132 +ip4:35.214.159.39 +ip4:77.104.159.143 +include:spf.protection.outlook.com +include:mktomail.com -all
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