Mail stuff

DMARC

DMARC forteller mottaker hva som skal gjøres med epost-meldinger som ikke validerer SPF og/eller DKIM. Domenet har følgende DMARC-policy: _dmarc.skreien.no. IN TXT "v=DMARC1; p=none" Ingen = Epost-meldingene skal taes imot uansett (p=none) Normal = Epost-meldingene skal puttes i karantene, dvs. typisk i spam-folderen (p=quarantine) Streng = Epost-meldingene skal avslås (p=reject)

DKIM

DomainKeys Identified Mail (DKIM) is an email authentication method designed to detect email spoofing. It allows the receiver to check that an email claimed to have come from a specific domain was indeed authorized by the owner of that domain.[1] It is intended to prevent forged sender addresses in emails, a technique often used in phishing and email spam. In technical terms, DKIM lets a domain associate its name with an email message by affixing a digital signature to it. Verification is carried out using the signer's public key published in the DNS. A valid signature guarantees that some parts of the email (possibly including attachments) have not been modified since the signature was affixed.

SPF

Sender Policy Framework (SPF). A type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send email on behalf of your domain. The purpose of an SPF record is to prevent spammers from sending messages with forged From addresses at your domain. Recipients can refer to the SPF record to determine whether a message purporting to be from your domain comes from an authorized mail server. If your domain does not have an SPF record, some recipient domains may reject messages from your users because they cannot validate that the messages come from an authorized mail server. Note: If you have an existing SPF record, you can update it to authorize an additional mail server. Be careful not to create multiple SPF records - only update the existing record. Multiple SPF records are not recommended and will cause authorization problem