Namespace DRIT.Mail.Rfc.Smtp

Classes

SmtpAuthenticationException

Thrown when SMTP authentication fails (e.g. a 535 reply), when no common mechanism can be negotiated, or when authentication is refused over an unencrypted connection.

SmtpBatchResult

The result of a batch Send(IEnumerable{MimeMessage}) operation. Immutable.

SmtpCertificateValidation

Provides SSL certificate validation callbacks for use with CertificateValidationCallback.

SmtpClient

Sends mail messages via SMTP (RFC 5321). One instance maintains a single connection; use Send(MimeMessage) for one message. Not thread-safe; use one instance per thread.

SmtpClientOptions

Configuration for SmtpClient. Mutable during construction; set all properties before calling Connect().

SmtpDeliveryResult

The result of a single Send(MimeMessage) operation. Immutable.

SmtpException

The base exception type for all SMTP errors. Carries the server reply (if any) that triggered the error.

SmtpExtensionNames

EHLO extension keyword names (RFC 5321 §4.1.1.0, RFC 2920, RFC 3207, RFC 4954, RFC 1870, RFC 1652, RFC 6531, RFC 3463).

SmtpProtocolException

Thrown when the SMTP server returns an unexpected or non-compliant reply, or when a required extension is not advertised.

SmtpRecipientResult

The result of a single RCPT TO command within a message delivery. Immutable.

SmtpReplyCode

Standard SMTP reply code values (RFC 5321 §4.2.2, RFC 4954 §4, RFC 3463).

SmtpResponse

A single SMTP reply (RFC 5321 §4.2). Immutable. Multi-line replies (e.g. an EHLO response) are assembled into a single SmtpResponse whose Lines collection holds the individual text lines.

SmtpServerCapabilities

Extensions advertised by the server in its EHLO response. Immutable. Populated by Parse(SmtpResponse) from the EHLO reply.

SmtpTimeoutException

Thrown when a read or write operation times out before the server responds.

Enums

SmtpAuthenticationMechanism

SASL authentication mechanisms supported by the SMTP client (RFC 4954).

SmtpSslMode

Specifies the TLS mode for an SMTP connection.