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IMailServiceConnectAsync Method (String, Int32, SecureSocketOptions, CancellationToken)

Asynchronously establish a connection to the specified mail server.

Namespace:  MailKit
Assembly:  MailKit (in MailKit.dll) Version: 3.0.0
Task ConnectAsync(
	string host,
	int port = 0,
	SecureSocketOptions options = SecureSocketOptions.Auto,
	CancellationToken cancellationToken = default


Type: SystemString
The host name to connect to.
port (Optional)
Type: SystemInt32
The port to connect to. If the specified port is 0, then the default port will be used.
options (Optional)
Type: MailKit.SecuritySecureSocketOptions
The secure socket options to when connecting.
cancellationToken (Optional)
Type: System.ThreadingCancellationToken
The cancellation token.

Return Value

Type: Task
An asynchronous task context.
ArgumentNullException The host is null.
ArgumentOutOfRangeExceptionport is not between 0 and 65535.
ArgumentException The host is a zero-length string.
ObjectDisposedException The IMailService has been disposed.
InvalidOperationException The IMailService is already connected.
OperationCanceledException The operation was canceled via the cancellation token.
IOException An I/O error occurred.
ProtocolException A protocol error occurred.

Asynchronously establishes a connection to the specified mail server.

If a successful connection is made, the AuthenticationMechanisms property will be populated.

See Also