Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
southtrust.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 08:48:52 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-2.mimecast.com: 0
- usb-smtp-inbound-1.mimecast.com: 0
A / AAAA Records
- 104.18.24.218 (no PTR)
Mail Server IPs
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns31.worldnic.com namehost.worldnic.com 126020609 10800 3600 604800 3600
Primary NS (mname)
ns31.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126020609
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns32.worldnic.com
ns31.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:12.175.57.58 ip4:209.34.255.0/24 ip4:44.214.246.148/32 include:southtrust-com.spf.smtp25.com include:spf.protection.outlook.com include:spf.cashedge.com include:mailgun.org include:usb._netblocks.mimecast.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
4 records- SPFv=spf1 ip4:12.175.57.58 ip4:209.34.255.0/24 ip4:44.214.246.148/32 include:southtrust-com.spf.smtp25.com include:spf.protection.outlook.com include:spf.cashedge.com include:mailgun.org include:usb._netblocks.mimecast.com -all
- MS=A6020161616A4139C52BEC6E43C33849726D8B57
- v=spf a mx ip4:167.89.11.238 -all
- ppe-0c2ca4200ad64c90974e
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