Mercer Schweiz

mercer.com

Industry: Consulting & audit
Headquarters: Zürich, Zurich
Type: listed
Checked on: 19 October 2026

83/100Grade B

Protection against forged senders: protected

Points per criterion

MX 10 / 10
SPF 13 / 15
DKIM 20 / 20
DMARC 25 / 25
DNSSEC 10 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 5 / 5

Industry avg.: 66.8 ▲ 16.2
Canton avg.: 53 ▲ 30
Overall avg.: 53.5 ▲ 29.5
Rank 6 of 45 in the industry

Findings

!DKIM key below 2048 bits

RSA-1024 is considered too weak (RFC 8301, M3AAWG). Rotate to 2048-bit keys.
!No MTA-STS

Without MTA-STS (or DANE) inbound encryption is not enforced; an attacker on the path can downgrade to plain text.

Check live in the Mail DNS Check →

Who runs the mail?

Mailbox provider: Self-hosted / other
Upstream gateway: Proofpoint
Provider jurisdiction: unclear · MX: US
Detection confidence: 85 / 100
Microsoft tenant: Federated · MMC
Tenant region: NA
Federated via: mmcglobal.okta.com

Signals (4)

Domain verification	Microsoft 365	`MS=ms17691168`
Domain verification	Google Workspace	`google-site-verification=EQJp9e00oXQcI7f`
Domain verification	Amazon	`amazonses:RslWUhaNAa9sxHEmO3VvhcP8N+s+DI`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Federated)`

MX servers

Pref	Host	IP	Network	Country	TLSA
5	`mxa-001b7601.gslb.pphosted.com`	`205.220.166.231`	AS26211 PROOFPOINT-ASN-US-WEST - Proofpoint, Inc.	US	–
5	`mxb-001b7601.gslb.pphosted.com`	`205.220.166.231`	AS26211 PROOFPOINT-ASN-US-WEST - Proofpoint, Inc.	US	–

SPF

v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all

all: ~all
DNS lookups: 1 / 10

DMARC

v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email

Policy: p=reject
Subdomains (sp): inherits p=reject
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): dmarc_agg@vali.email

DKIM

Selector	Key	delegated to
`cm`	RSA 1024	–
`ctct1`	RSA 2048	`100._domainkey.dkim1.ccsend.com`
`ctct2`	RSA 2048	`200._domainkey.dkim2.ccsend.com`
`k1`	RSA 1024	`dkim.mcsv.net`
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`m1`	RSA 1024	–
`mail`	RSA 1024	–
`mailjet`	RSA 2048	–
`mandrill`	RSA 1024	–
`pm`	RSA 1024	–
`s1`	RSA 2048	`s1._domainkey.email.bounceexchange.com`
`s2`	RSA 1024	`s2._domainkey.email.bounceexchange.com`
`salesforce`	RSA 1024	–
`smtpapi`	RSA 1024	–

Checked: 100 common selectors. Keys under custom selectors remain invisible.

Transport encryption

MTA-STS: missing
DANE: missing
DNSSEC: active
TLS-RPT: mailto:tls-report@vali.email
BIMI: missing

Verified services

From verification records in the domain TXT: services where the domain is verified.

Microsoft 365GoogleAppleAtlassianAmazon SESBrevoSmartsheet

History

19 October 2026 Score 83 · DMARC reject

All changes of this organisation in the change log →

Raw data

mercer.com. IN MX 5 mxa-001b7601.gslb.pphosted.com.
mercer.com. IN MX 5 mxb-001b7601.gslb.pphosted.com.
mercer.com. IN TXT "v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"
_dmarc.mercer.com. IN TXT "v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email"
_smtp._tls.mercer.com. IN TXT "v=TLSRPTv1; rua=mailto:tls-report@vali.email"

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