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According to Live Direct Marketing's daily DNS scan (July 30, 2026), b2bhosting.es (Tranco rank #159,546) receives mail via Microsoft 365 and sends through Doppler, MailChannels, Postmark. Its observed DMARC policy is p=none (monitoring). Policy alone does not establish inbox or spam placement.
Last updated: .
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | Doppler, MailChannels, Postmark |
| SaaS senders in SPF | CodeTwo Email Signatures 365 |
| DMARC policy | p=none |
| DMARC record | v=DMARC1; p=none |
| Tranco rank | #159,546 |
| Snapshot | 2026-07-30 (updated daily) |
MX identifies the observed inbound mailbox or gateway. SPF includes identify services authorised to send for the domain. DMARC shows the published authentication policy. The dataset currently contains 4 populated signal groups for this page.
Observed deliverability context: based on the available observations, this page describes DNS configuration only. It does not represent a complete audit of b2bhosting.es and does not prove that a particular message reaches the inbox or spam folder.
b2bhosting.es uses Microsoft 365 for inbound mail (detected from its primary MX record) as of July 30, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
b2bhosting.es authorises Doppler, MailChannels, Postmark in its SPF record as of July 30, 2026.
No — b2bhosting.es publishes p=none, which only monitors and does not block spoofing (as of July 30, 2026).
Same daily dataset, three views: how its mailbox provider is trending, how strict DMARC is at its position in the list, and where its own policy sits among all DMARC publishers in the dataset.
The two ways an SPF record silently stops working. Counted from the published record; include chains are resolved one level deep, so the lookup count is a lower bound.
Adoption of the records that go beyond SPF and DMARC. Shown for the whole snapshot — per-domain detail lives on the security posture report.
The MX hostname resolved to its addresses, and those addresses resolved back. Missing or mismatched reverse DNS is one of the few DNS-visible causes of outright rejection.
b2bhosting-es.mail.protection.outlook.com has a PTR pointing to mail-db3pr0202cu00100.inbound.protection.outlook.com, outside its own zone — normal for cloud providers, a warning sign for a self-run server.The same snapshot cut by zone, by list position and by how alive the published policies are.
Most used sending platforms among 1,673 SPF-publishing domains in Spain: Amazon SES 16.1% · Zendesk 11.7% · Mandrill 11.4% · Mailchimp 10.6%. b2bhosting.es runs a stack that is not among the most common in this zone.
Nearby domains in the Tranco ranking: vicnews.com · muze.gov.tr · wikiislam.net · wordofmouth.com.au
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