4.4 KiB
4.4 KiB
Information about how to configure email servers, services, etc.
Note: Some content is focused on Germany.
Verbindungen
- E-Mail-Client <--> E-Mail-Server
- E-Mail-Server <--> E-Mail-Server <-- in diesem Repository geht es hauptsächlich um diese Verbindungen.
Wichtige Funktionen
- SPF
- Sender Policy Framework
- https://en.wikipedia.org/wiki/Sender_Policy_Framework
- DKIM
- DomainKeys Identified Mail
- https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail
- DMARC
- Domain-based Message Authentication, Reporting and Conformance
- https://en.wikipedia.org/wiki/DMARC
- DNSSEC
- Domain Name System Security Extensions
- https://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions
- DANE
- DNS-based Authentication of Named Entities
- https://en.wikipedia.org/wiki/DNS-based_Authentication_of_Named_Entities
- MTA-STS
- Message Transfer Agent, Strict Transport Security
- https://en.wikipedia.org/wiki/MTA-STS
- With MTA-STS a SSL/TLS encryption is enforced while with StartTLS an SSL/TLS encryption is optional.
Tester
- https://mecsa.jrc.ec.europa.eu/en/ EU Email Communications Security Assessment (MECSA)
- https://mxtoolbox.com/supertool
- https://mxtoolbox.com/dmarc/dmarc-email-tools SPF DKIM DMARC
- https://dmarcly.com/tools/ SPF DKIM DMARC
- https://www.mail-tester.com/
- https://www.emailchecky.com/en/
- https://ssl-tools.net/
- https://www.checktls.com/index.html
- https://www.debouncer.com/reverse-dns-check
- https://testconnectivity.microsoft.com/tests/exo
- https://testconnectivity.microsoft.com/tests/O365DaneValidation/input
- https://dnschecker.org/all-tools.php
Wissen
- https://support.google.com/a/answer/81126 Email sender guidelines
- https://www.nospamproxy.de/wp-content/uploads/Praxisleitfaden-DKIM-SPF-DMARC-DANE-1.pdf
- https://www.internetsociety.org/deploy360/dnssec/statistics/
- https://stats.labs.apnic.net/dnssec/
- https://stats.labs.apnic.net/dnssec
- https://blog.lindenberg.one/EmailSicherheitsTest
- https://www.heise.de/news/Transportsicherheit-BSI-zertifiziert-E-Mail-Dienste-nach-neuer-Richtlinie-9349117.html
- https://certified-senders.org/wp-content/uploads/2020/02/E-Mail-Transportverschluesselung-STARTTLS-vs.-DANE-vs.-MTA-STS_updated.pdf
- https://www.golem.de/news/smtp-mta-sts-bringt-sichere-verschluesselung-zwischen-mailservern-1809-136853.html
- https://beta-its.de/ultimative-domain-sicherheit-dnssec-mta-sts-dane-dmarc
- https://www.hornetsecurity.com/de/services/email-authentifizierung/
- https://www.anubisnetworks.com/blog/dmarc_dane_explained
- https://www.heise.de/news/iX-Workshops-Sichere-Datenuebertragung-mit-TLS-DNSSEC-und-DANE-6332452.html
- https://www.nslookup.io/learning/what-is-a-good-ttl-for-dns/ TTL
- https://www.varonis.com/blog/dns-ttl TTL
DNSSEC
Tester
Hoster
Allgemein
- https://www.hosttest.de/artikel/groesste-webhostinganbieter-in-deutschland
- https://www.trending.de/hosting/die-10-groessten-deutschen-hoster-und-meine-empfehlung/
Microsoft
- https://www.windowspro.de/news/microsoft-unterstuetzt-dane-dnssec-exchange-online/04980.html
- https://learn.microsoft.com/de-de/purview/how-smtp-dane-works
- https://practical365.com/exchange-online-dnssec-dane/
- https://learn.microsoft.com/de-de/microsoft-365/admin/get-help-with-domains/create-dns-records-at-any-dns-hosting-provider?view=o365-worldwide
- https://learn.microsoft.com/de-de/microsoft-365/enterprise/external-domain-name-system-records?view=o365-worldwide
Hoster: IONOS
Hoster: Strato
- https://www.strato.de/faq/domains/wie-kann-ich-bei-strato-meine-dns-eintraege-verwalten/ (
smtpin.rzone.de) - https://www.strato.de/faq/domains/sichern-sie-ihre-webseite-mit-dnssec/
- https://www.strato.de/faq/domains/was-ist-domain-guard/
- https://www.strato.de/faq/hosting/DMARC-Policy/
- https://www.strato.de/faq/hosting/dmarc-bei-strato-aktivieren/
- https://www.strato.de/faq/mail/wie-kann-ich-fuer-meine-domain-die-dkim-einstellungen-aendern/
- https://www.strato.de/faq/mail/so-lauten-die-strato-e-mail-server/
- https://www.strato.de/faq/mail/externes-e-mail-programm-mit-strato-e-mail-adresse-nutzen/