Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3csoftware.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 20:35:57 UTC · ↺ Refresh
MX Hostnames
- 3csoftware-com.mail.protection.outlook.com
MX Priorities
- 3csoftware-com.mail.protection.outlook.com: 1
A / AAAA Records
- 162.159.135.42 (no PTR)
Mail Server IPs
- 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1081.ui-dns.biz hostmaster.1and1.com 2017032191 28800 7200 604800 300
Primary NS (mname)
ns1081.ui-dns.biz
Admin Email (rname)
hostmaster@1and1.com
Serial
2017032191
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1081.ui-dns.com
ns1081.ui-dns.biz
ns1081.ui-dns.org
ns1081.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.salesforce.com include:spf-us.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
12 records- anthropic-domain-verification-rg2jdp=rle8uQwv0e1FPUj9OD8z8cB4F
- lymlndvxv2qbk1kw1gxyqk63jq60c7cq
- ca3-291e0c45b6fe4607b69ab7de8733e790
- SPFv=spf1 include:spf.protection.outlook.com include:spf.salesforce.com include:spf-us.emailsignatures365.com -all
- MS=ms85808650
- ms-domain-verification=022f9d58-5d67-4506-9cd1-0fbf01f1df4b
- _2fcx0o6xrxa41gy1as14n37zjct6nrj
- facebook-domain-verification=6gv4bfxx26a0li6mp48kmk7fau4t0d
- openai-domain-verification=dv-AwIRZvAmKHRpl7w5w9UxkNp8
- pardot839873=bbf982fc5b0dfb2d806141682921b0e8599f93a22bf2b5567dbf4a2f6b4fed27
- 94pnxvrty0bf26ljsskdkyr8sjr35chv
- tAPcQYw5SbwJajAhfI8+YC1cbx0iBq0D9klvVyzutL9YwYYoGIan9XI6pudOtCunmov15KsH9O5Ysg9c27X5+A==
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