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Email infrastructure of iop.org

According to Live Direct Marketing's daily DNS scan (July 12, 2026), iop.org (Tranco rank #2,932) receives mail via Mimecast and sends through Adestra (MessageFocus), SendGrid (Twilio), Mimecast. Its DMARC policy is p=none (monitor only) — like the majority of DMARC publishers (53% don't enforce).

Mailbox provider (MX)Mimecast
ESPs in SPFAdestra (MessageFocus), SendGrid (Twilio), Mimecast
SaaS senders in SPFnone detected
DMARC policyp=none
DMARC recordv=DMARC1;p=none;sp=none;pct=100;rua=mailto:security.alerts@iop.org;ruf=mailto:security.alerts@iop.org;ri=86400;aspf=r;fo=1;
Tranco rank#2,932
Snapshot2026-07-12 (updated daily)

Frequently asked questions

What email provider does iop.org use?

iop.org uses Mimecast for inbound mail (detected from its primary MX record) as of July 12, 2026, per Live Direct Marketing's daily Tranco top-1M scan.

What ESP does iop.org use?

iop.org authorises Adestra (MessageFocus), SendGrid (Twilio), Mimecast in its SPF record as of July 12, 2026.

Does iop.org enforce DMARC?

No — iop.org publishes p=none, which only monitors and does not block spoofing (as of July 12, 2026).

DNS records say who should deliver your mail — they don't say whether it lands in the inbox. Run a free inbox placement test for iop.org at Gmail, Outlook, Yandex and Mail.ru.
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