Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
atlantahistorycenter.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 01:55:25 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 23.185.0.2 (no PTR)
- 2620:12a:8000::2 (no PTR)
- 2620:12a:8001::2 (no PTR)
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
dns1.1sourcing.net netops.ribbit.net 2025111801 10800 3600 777600 3600
Primary NS (mname)
dns1.1sourcing.net
Admin Email (rname)
netops@ribbit.net
Serial
2025111801
Refresh
10800s
Retry
3600s
Expire
777600s
Minimum TTL
3600s
Nameservers (NS)
dns3.1sourcing.net
dns1.1sourcing.net
dns2.1sourcing.net
SPF Record
✓ Strict (-all)
v=spf1 include:_s00802979.autospf.email -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- 0ed1fe018a11d5341f04094a26ad260e67d1aa1ec9
- e2ma-verification=zp0
- SPFv=spf1 include:_s00802979.autospf.email -all
- DKIMv=DKIM1;h=sha256;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArvxTDQlHoj6o6GPgcpdgcwfP3ptq0VBBjApTJ9LpfO1F5pK7334PHA++UCkMUZzVVdZQZ5WK8qOwC1XBAqSFTVMcs5MEcaM9+anZX+AVJI4c+f44M0ioLxpLh1VkvJCJT22DcTyP5/mjvjc6+uwvHDQttxNXFmfZ/OXbhuqtp2RP+fQ65ZWWgG09wc5DjXGOfj18ULWvJviJ+mIEP3cte4SxYHfONGIiUTct09MJgvhieWRB4Skiu5KyTGSjjSfD4z1MvFjkorlBXirCI4ujeVvAADgo4U+twSGhtgRFGpQGyf+5/88uZ60fXTbPysWD4JcB4WYfkY8WVLp8SeEoZwIDAQABCan
- google-site-verification=X5qVDjWwKd_v6Y9xV5kV89s2SZNl5rKS9NI6hMYnvPU
- google-site-verification=FrqfV_Sju6hBH_EMk2yGL8axjFcxmRd1xKgRqAZqYAw
- /vWl4hspYFlrUS9CkG23jtHVR0OFi9m+Y13d42DZ2bCISYwA3S+JINItCrtdJ2VFWvVjkuZ9nSlssjo9K+Id+w==
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