Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
postup.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-28 00:18:25 UTC · ↺ Refresh
MX Hostnames
- d348576a.ess.barracudanetworks.com
- d348576b.ess.barracudanetworks.com
MX Priorities
- d348576a.ess.barracudanetworks.com: 0
- d348576b.ess.barracudanetworks.com: 10
A / AAAA Records
- 141.193.213.21 (no PTR)
- 141.193.213.20 (no PTR)
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns-487.awsdns-60.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-487.awsdns-60.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1388.awsdns-45.org
ns-1858.awsdns-40.co.uk
ns-487.awsdns-60.com
ns-536.awsdns-03.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:mail.zendesk.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:mail.zendesk.com ~all
- atlassian-domain-verification=yaT4TKcAtmTCPKlvQWf8kyshPIEzmlEjBuU8aYrdgRaF6wr3IrU4CiFBcVlcuTfZ
- google-site-verification=thhw_ofdBtVvFXSAfObKs5Ax_Ryw56xWVYpwfNt0LCg
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