t-systems.ch

DNS records live

NS

• pdns109.ultradns.biz
• pdns109.ultradns.com
• pdns109.ultradns.net
• pdns109.ultradns.org

MX

• 100 mailin.ng.telekom.net

TXT

• _telesec-domain-validation=2019-12-19_ixoevmrQUWgNSKeyWIX3POxbJhWKZKfkYa1nB43GI7OvH5FmWv
• _telesec-domain-validation=313051_2022-12-01_Y7ItLJYRhBemSXCaBLatgxjGOVdbgTBquevei5SsyV9UYK6B0s

Verified for

• Microsoft 365

Email authentication strong

SPF

v=spf1 a:mx1.t-systems.ch a:mx2.t-systems.ch include:_spf.telekom.com ~all

softfail (~all)

DMARC

v=DMARC1;p=quarantine;rua=mailto:dmarc@t-systems.com;ruf=mailto:dmarc@t-systems.com;

policy: quarantine

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗