Struct SmtpServerConfig 

pub struct SmtpServerConfig {
    pub host: String,
    pub port: u16,
    pub tls_port: Option<u16>,
    pub max_message_size: String,
    pub require_auth: bool,
    pub enable_starttls: bool,
    pub rate_limit: Option<RateLimitConfig>,
    pub outbound: SmtpOutboundConfig,
}

SMTP server listener configuration.

Fields

host: String

Required. IP address or hostname on which the SMTP listener binds (e.g. "0.0.0.0" for all interfaces).

port: u16

Required. SMTP port number (typically 25 for server-to-server or 587 for mail submission). Must be in the range 1–65535.

tls_port: Option<u16>

Default: None. SMTPS (implicit TLS) port number, typically 465. Requires a [tls] section to be configured.

max_message_size: String

Required. Maximum accepted message size, expressed as a human-readable string (e.g. "50MB", "1GB"). Parsed by SmtpServerConfig::max_message_size_bytes.

require_auth: bool

Default: false. When true, the server requires SMTP AUTH before accepting mail for delivery. Recommended for submission ports.

enable_starttls: bool

Default: false. When true, advertises the STARTTLS extension and upgrades connections on demand. Requires a [tls] section.

rate_limit: Option<RateLimitConfig>

Default: None. Per-IP and per-hour rate limiting for SMTP connections. When absent no rate limiting is applied.

outbound: SmtpOutboundConfig

Default: SmtpOutboundConfig::default(). Outbound connection pool parameters. Omitting the [smtp.outbound] subsection uses built-in defaults (30 s idle, 8 per-remote, 256 global cap).

Implementations

impl SmtpServerConfig

pub fn max_message_size_bytes(&self) -> Result<usize>

Parse max message size to bytes.

Trait Implementations

impl Clone for SmtpServerConfig

fn clone(&self) -> SmtpServerConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SmtpServerConfig

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SmtpServerConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SmtpServerConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.