Struct EnhancedStatusCode 

pub struct EnhancedStatusCode {
    pub class: u8,
    pub subject: u8,
    pub detail: u8,
}

Enhanced Status Code (RFC 3463)

Format: X.Y.Z where:

• X: Class (2=Success, 4=Transient Failure, 5=Permanent Failure)
• Y: Subject (0=Other, 1=Addressing, 2=Mailbox, 3=Mail System, 4=Network, 5=Protocol, 6=Content, 7=Security)
• Z: Detail (specific detail code)

Fields

class: u8

subject: u8

detail: u8

Implementations

impl EnhancedStatusCode

pub const fn new(class: u8, subject: u8, detail: u8) -> Self

Create a new enhanced status code

pub fn parse(s: &str) -> Option<Self>

Parse enhanced status code from string (e.g., “5.1.1”)

pub fn is_success(&self) -> bool

Check if this is a success code (2.X.X)

pub fn is_transient(&self) -> bool

Check if this is a transient failure (4.X.X)

pub fn is_permanent(&self) -> bool

Check if this is a permanent failure (5.X.X)

impl EnhancedStatusCode

Common enhanced status codes (RFC 3463)

pub const SUCCESS: Self

pub const BAD_DESTINATION_MAILBOX: Self

pub const BAD_DESTINATION_SYSTEM: Self

pub const BAD_DESTINATION_SYNTAX: Self

pub const DESTINATION_AMBIGUOUS: Self

pub const DESTINATION_VALID: Self

pub const MAILBOX_MOVED: Self

pub const BAD_SENDER_ADDRESS: Self

pub const BAD_SENDER_SYSTEM: Self

pub const MAILBOX_DISABLED: Self

pub const MAILBOX_FULL: Self

pub const MAILBOX_FULL_TEMP: Self

pub const MESSAGE_TOO_LARGE: Self

pub const MAILING_LIST_EXPANSION: Self

pub const SYSTEM_FULL: Self

pub const SYSTEM_NOT_ACCEPTING: Self

pub const SYSTEM_CAPABILITY: Self

pub const MESSAGE_TOO_BIG: Self

pub const SYSTEM_INCORRECTLY_CONFIGURED: Self

pub const NO_ANSWER: Self

pub const CONNECTION_DROPPED: Self

pub const ROUTING_SERVER_FAILURE: Self

pub const NETWORK_CONGESTION: Self

pub const ROUTING_LOOP: Self

pub const DELIVERY_TIME_EXPIRED: Self

pub const INVALID_COMMAND: Self

pub const SYNTAX_ERROR: Self

pub const TOO_MANY_RECIPIENTS: Self

pub const INVALID_PARAMETERS: Self

pub const WRONG_PROTOCOL: Self

pub const MEDIA_NOT_SUPPORTED: Self

pub const CONVERSION_REQUIRED: Self

pub const CONVERSION_NOT_POSSIBLE: Self

pub const CONVERSION_LOST: Self

pub const CONVERSION_FAILED: Self

pub const DELIVERY_NOT_AUTHORIZED: Self

pub const MAILING_LIST_EXPANSION_PROHIBITED: Self

pub const SECURITY_CONVERSION_REQUIRED: Self

pub const SECURITY_FEATURES_NOT_SUPPORTED: Self

pub const CRYPTOGRAPHIC_FAILURE: Self

pub const CRYPTOGRAPHIC_ALGORITHM_NOT_SUPPORTED: Self

pub const MESSAGE_INTEGRITY_FAILURE: Self

pub const AUTHENTICATION_CREDENTIALS_INVALID: Self

pub const AUTHENTICATION_MECHANISM_TOO_WEAK: Self

pub const ENCRYPTION_NEEDED: Self

pub const SENDER_ADDRESS_INVALID: Self

pub const MESSAGE_REFUSED: Self

pub const TRUST_RELATIONSHIP_REQUIRED: Self

pub const PRIORITY_TOO_LOW: Self

pub const MESSAGE_TOO_BIG_FOR_POLICY: Self

pub const MAILBOX_OWNER_CHANGED: Self

pub const RRVS_CANNOT_VALIDATE: Self

Trait Implementations

impl Clone for EnhancedStatusCode

fn clone(&self) -> EnhancedStatusCode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EnhancedStatusCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for EnhancedStatusCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for EnhancedStatusCode

fn eq(&self, other: &EnhancedStatusCode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for EnhancedStatusCode

impl Eq for EnhancedStatusCode

impl StructuralPartialEq for EnhancedStatusCode