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sib.swiss

Email infrastructure report · Last checked

Summary

sib.swiss uses Microsoft 365 for email and has SPF, DKIM, and DMARC configured. It is not catch-all.

Mail provider

ProviderMicrosoft 365 business
Primary MXsib-swiss.mail.protection.outlook.com

MX records

PriorityHostnameIPs
10sib-swiss.mail.protection.outlook.com52.101.185.12, 52.101.185.13, 52.101.185.14, 52.101.187.1, 2a01:111:f403:ca3c::1, 2a01:111:f403:ca3c::, 2a01:111:f403:ca3c::2, 2a01:111:f403:ca3e::1

Authentication

SPF✓ Present ~all
DKIM✓ Found (selectors: selector1)
DMARC✓ Present p=none
Raw SPF record
v=spf1 mx ip4:192.33.215.141 ip4:192.42.198.12 ip4:192.42.198.29 include:spf.protection.outlook.com ~all
Raw DMARC record
v=DMARC1; p=none; sp=none; rua=mailto:dmreports@sib.swiss; ruf=mailto:dmreports@sib.swiss; fo=1; rf=afrf; pct=100; ri=604800

Email behavior

Catch-all✗ No
Disposable✗ No
Free provider✗ No
STARTTLS✓ Supported
SMTP response102ms
SMTP banner220 ZR2PEPF0000012E.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Thu, 30 Jul 2026 01:12:23 +0000 [08DEEDAD0A44877F]

What this means

This domain has strong email authentication. Messages claiming to come from @sib.swiss can be cryptographically verified by recipients, making spoofing difficult. Deliverability for legitimate mail should be good.

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curl https://api.checkmail.dev/v1/verify \
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