MX servers

A directory of the mail servers (MX hosts) behind the domains we have checked - their reverse DNS, forward-confirmed rDNS, detected software and blocklist status. Public DNS facts only; no active SMTP scanning.

1,543 mail servers in the directory

eur.olc.protection.outlook.comMicrosoft Exchange / 3652ms01.signal-iduna.de2ms02.signal-iduna.de2mxa-000c7201.gslb.pphosted.com2mxb-000c7201.gslb.pphosted.com2mx01.cloud.vadesecure.com2mx02.cloud.vadesecure.com2mx03.cloud.vadesecure.com2mx04.cloud.vadesecure.com2vade-mx-fr01.hornetsecurity.com2vade-mx-fr02.hornetsecurity.com2vade-mx-eu-fallback01.hornetsecurity.com2vade-mx-eu-fallback02.hornetsecurity.com2webmail.kaplanco.comMicrosoft Exchange / 3652ocn-fc-r-01.ocn.ad.jpMicrosoft Exchange / 3652mta5.am0.yahoodns.net1mta6.am0.yahoodns.net1mta7.am0.yahoodns.net1126mx00.mxmail.netease.com1126mx01.mxmail.netease.com1126mx02.mxmail.netease.com1126mx03.mxmail.netease.com1gmail-smtp-in.l.google.comGoogle (Gmail)1alt1.gmail-smtp-in.l.google.com1alt2.gmail-smtp-in.l.google.com1alt3.gmail-smtp-in.l.google.com1alt4.gmail-smtp-in.l.google.com1iom-int.mail.protection.outlook.comMicrosoft Exchange / 3651aspmx.l.google.comGoogle (Gmail)1aspmx2.googlemail.com1aspmx3.googlemail.com1alt1.aspmx.l.google.com1alt2.aspmx.l.google.com1mx3.csc.com.cn1mx4.csc.com.cn1mx5.csc.com.cn1mx01.mail.icloud.com1mx02.mail.icloud.com1talenthigher-com.mail.protection.outlook.comMicrosoft Exchange / 3651gw.oxmail.vn1mx0a-001dcc01.pphosted.com1mx0b-001dcc01.pphosted.com1emailqu.com1mx1.deloitte.iphmx.com1mx2.deloitte.iphmx.com1mx1.hc5291-32.iphmx.com1mx2.hc5291-32.iphmx.com1mx0a-001b2d05.pphosted.com1mx0b-001b2d05.pphosted.com1hotmail-com.olc.protection.outlook.comMicrosoft Exchange / 3651mxmail1.lifung.com1mxmail2.lifung.com1mxa-0023bb01.gslb.pphosted.com1mxb-0023bb01.gslb.pphosted.com1usrelay.mailhost.myequans.com1anzrelay.mailhost.myequans.com1equans.mail.protection.outlook.comMicrosoft Exchange / 3651eu-smtp-inbound-1.mimecast.com1eu-smtp-inbound-2.mimecast.com1alt3.aspmx.l.google.com1edwards-com.mail.protection.outlook.comMicrosoft Exchange / 3651alt4.aspmx.l.google.com1getresponse-com.mail.protection.outlook.comMicrosoft Exchange / 3651mx01.mail.alibaba.com1mx02.mail.alibaba.com1rosemunde-com.mail.protection.outlook.comMicrosoft Exchange / 3651hzmx01.mxmail.netease.com1hzmx02.mxmail.netease.com1mx1.grundig.com1mx2.grundig.com1mx3.grundig.com1mail.catshopvip.site1omv-com.mail.protection.outlook.comMicrosoft Exchange / 3651v-ico-ppmx1.senate.gov1v-ico-ppmx2.senate.gov1v-ico-ppmx3.senate.gov1v-ico-ppmx4.senate.gov1w-ico-ppmx1.senate.gov1w-ico-ppmx2.senate.gov1mintenergie-com01b.mail.protection.outlook.comMicrosoft Exchange / 3651scml-pt.mail.protection.outlook.comMicrosoft Exchange / 3651mx00.ionos.de1mx01.ionos.de1mx0a-001f9d01.pphosted.com1mx0b-001f9d01.pphosted.com1mx.bt.prod.cloud.openwave.ai1tjdeed-com.mail.protection.outlook.comMicrosoft Exchange / 3651mxa-0071fc01.gslb.pphosted.com1mxb-0071fc01.gslb.pphosted.com1smtp-in.orange.fr1smtp-in2.orange.fr1andromeda.getspace.usExim1namaa-sa.mail.protection.outlook.comMicrosoft Exchange / 3651epailnigeria.com1mail.epailnigeria.comExim1us-smtp-inbound-1.mimecast.com1us-smtp-inbound-2.mimecast.com1mail.spia.com.phExim10101-co-jp.mail.protection.outlook.comMicrosoft Exchange / 3651theavongorge-com.mail.protection.outlook.comMicrosoft Exchange / 3651
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About this directory

Each entry links to a page with public facts about that mail server: the IPs it resolves to, its reverse DNS and forward-confirmed rDNS, any detected software, and blocklist (DNSBL) reputation. A server appears here only after a domain that uses it has been checked. We never actively scan mail servers - all of this comes from public DNS or data already collected.

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Contact & data requests

Have a question, want your data removed, or want us to stop checking your mail server? Reach out - we respond to every message.