Crate decon_spf

This crate is responsible for providing tools to parse and validate Spf Records. When the builder features is enabled access to the SpfBuilder struct and related functions is provided.

For a list of supported Modifiers and Mechanism. See Kind

This crate is able to deconstruct v=spf1 and spf2.0 records. Note: Spf2.0 records are essentially defunct are its support is for historical reasons and may be removed in a future release.

Abilities:

• Check and Set Spf record version. See: Spf Versions
• Check and Create Spf Mechanism/Modifiers:
  • Mechanism
  • Mechanism::Qualifier
  • Mechanism::Kind

Feature Flags:

• ptr (Enabled by default.)
  The ptr mechanism is highly discouraged. If you want to allow it without warnings, then you should provide the --no-default-features option.
• strict-dns (Disabled by default.) This enables syntactical checking of Domain Names.
  • When enabled it changes the behaviour of FromStr for Mechanism<String> and ParsedMechanism. By default, rrdata is not checked.
    When strict-dns is enabled an invalid domain host will be seen as Hard error. Any additional parsing will be halted.
• builder (Disabled by default.)
  This enables the use of SpfBuilder and its related features
  You are able to convert and Spf<String> into() an SpfBuilder Struct.
• spf2 (Disabled by default)
  This enables the ability to programmatically create Spf2 (SenderID) records. As this has become defunct. There is no real need for it. But it remains as an option if desired.
• serde (Disabled by default.)

Modules

• mechanism
  This module contains the tools and functions to dealing with Mechanisms found within a Spf DNS record.

Structs

• Spf
  Base struct for an Spf of any type.
• SpfBuilderbuilder
  The definition of the SpfBuilder struct which contains all information related a single SPF record.
• SpfErrors
  Contains a vector of parsing or validation errors which are represented using various SpfError codes.

Enums

• SpfError
  A list of expected and possible errors for SPF records.