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According to Live Direct Marketing's daily DNS scan (July 13, 2026), signalfx.com (Tranco rank #7,486) receives mail via Cisco IronPort and sends through Mailchimp, Zendesk, Amazon SES. Its DMARC policy is p=quarantine — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Cisco IronPort |
|---|---|
| ESPs in SPF | Mailchimp, Zendesk, Amazon SES, Marketo (Adobe) |
| SaaS senders in SPF | Statuspage (Atlassian) |
| DMARC policy | p=quarantine |
| DMARC record | v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email,mailto:ops@signalfx.com |
| Tranco rank | #7,486 |
| Snapshot | 2026-07-13 (updated daily) |
signalfx.com uses Cisco IronPort for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
signalfx.com authorises Mailchimp, Zendesk, Amazon SES, Marketo (Adobe) in its SPF record as of July 13, 2026.
Partially — signalfx.com publishes p=quarantine (as of July 13, 2026).