Post by jabom on Dec 28, 2023 11:30:20 GMT 1
A match is successful when a valid A record is found, irrespective of the actual lookup result. INCLUDE: It authorizes third-party email senders by stating their domains. A sender is authorized only if its IP address matches the IP addresses or domains provided in the SPF record of the listed domain. SPF Qualifiers When a mechanism doesn’t have a qualifier, and there’s still a successful match, SPF authentication passes. Each of the mechanisms is coupled with one of the four qualifiers mentioned below.
Qualifier Result Action Taken by Receiving Job Function Email List Server + Pass Email successfully passes SPF authentication, and the server can exchange emails. Emails are marked as genuine. This is the default action applied if there’s no qualifier. – Fail Email fails authentication because the sending server doesn’t belong to the list. The mail may get rejected by the receiver’s mailbox. ~ SoftFail The receiver’s mailbox accepts the message; however, it is marked as suspicious and lands in the spam folder. ? Neutral Email message neither passes nor fails authentication.
The action taken is unspecified and the email is accepted by the receiver. SPF Modifiers SPD modifiers are responsible for determining the working parameters of an SPF syntax. It includes name or value pairs separated by the ‘=’ symbol, which shares extra details and exceptions to rules, if any. Modifiers appear just once and only in the last section of an SPF record. modifiers are ignored in the process. The ‘redirect’ modifier is used to direct other SPF records for authentication.
Qualifier Result Action Taken by Receiving Job Function Email List Server + Pass Email successfully passes SPF authentication, and the server can exchange emails. Emails are marked as genuine. This is the default action applied if there’s no qualifier. – Fail Email fails authentication because the sending server doesn’t belong to the list. The mail may get rejected by the receiver’s mailbox. ~ SoftFail The receiver’s mailbox accepts the message; however, it is marked as suspicious and lands in the spam folder. ? Neutral Email message neither passes nor fails authentication.
The action taken is unspecified and the email is accepted by the receiver. SPF Modifiers SPD modifiers are responsible for determining the working parameters of an SPF syntax. It includes name or value pairs separated by the ‘=’ symbol, which shares extra details and exceptions to rules, if any. Modifiers appear just once and only in the last section of an SPF record. modifiers are ignored in the process. The ‘redirect’ modifier is used to direct other SPF records for authentication.