optimumreturn.com

Valid Email Server
Domain Lookup › optimumreturn.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
optimumreturn.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 13:26:18 UTC · ↺ Refresh

MX Hostnames

  • mx3.mtaroutes.com
  • mx1.mtaroutes.com
  • mx2.mtaroutes.com
  • mx4.mtaroutes.com

MX Priorities

  • mx4.mtaroutes.com: 40
  • mx3.mtaroutes.com: 30
  • mx2.mtaroutes.com: 20
  • mx1.mtaroutes.com: 10

A / AAAA Records

  • 10.187.172.76 (no PTR)
  • 169.60.137.187 ↩ ns1.optimumreturn.com
  • 10.187.172.74 (no PTR)
  • 10.65.196.75 (no PTR)
  • 169.60.137.183
  • 169.60.137.188
  • 10.187.172.80
  • 169.60.137.186
  • 2002:a93c:89b7::a93c:89b7
  • 2002:a93c:89bb::a93c:89bb
  • 2002:a93c:89ba::a93c:89ba
  • 2002:a93c:89bc::a93c:89bc

Mail Server IPs

  • 38.101.250.150 ↩ fe3-r2-in.atl06.l.antispamcloud.com
  • 2001:550:2:78::ca:100 ↩ fe3-r2-in.atl06.l.antispamcloud.com
  • 38.71.16.244 ↩ fe2-r2-in.la10.l.antispamcloud.com
  • 2001:550:2:3::62:100 ↩ fe2-r2-in.la10.l.antispamcloud.com
  • 38.89.254.156 ↩ fe1-r2-in.ch03.l.antispamcloud.com
  • 2001:550:2:61::2fc:100 (no PTR)

SOA Record

Raw SOA macarthur.optimumreturn.com admin.optimumreturn.com 2026015607 1200 600 86400 3600
Primary NS (mname)
macarthur.optimumreturn.com
Admin Email (rname)
admin@optimumreturn.com
Serial
2026015607
Refresh
1200s
Retry
600s
Expire
86400s
Minimum TTL
3600s

Nameservers (NS)

macarthur.optimumreturn.com
vrand.optimumreturn.com
ns1.optimumreturn.com
ns2.optimumreturn.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.mtaroutes.com ip4:169.60.137.128/26 a:mail.optimumreturn.com a:backupmail.optimumreturn.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

4 records
  • MS=9B0E22415EBA43609E7C6B0C5813687642B14B31
  • uj970e2r9c4cufoa2sc4tro2s0
  • google-site-verification=PNp2o29baOVNcBd9Db7jvwRrTyKTn-L7KYRLYu5xiFA
  • SPFv=spf1 include:spf.mtaroutes.com ip4:169.60.137.128/26 a:mail.optimumreturn.com a:backupmail.optimumreturn.com -all
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