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MimeKit

DkimSignerQueryMethod Property

Get or set the public key query method.

Namespace: MimeKit.Cryptography
Assembly: MimeKit (in MimeKit.dll) Version: 4.3.0
Syntax
C#
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public string QueryMethod { get; set; }

Property Value

String
The public key query method.
Remarks

Gets or sets the public key query method.

The value should be a colon-separated list of query methods used to retrieve the public key (plain-text; OPTIONAL, default is "dns/txt"). Each query method is of the form "type[/options]", where the syntax and semantics of the options depend on the type and specified options.

Example
C#
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public static void DkimSign (MimeMessage message)
{
    var headers = new HeaderId[] { HeaderId.From, HeaderId.Subject, HeaderId.Date };
    var signer = new DkimSigner ("privatekey.pem", "example.com", "brisbane", DkimSignatureAlgorithm.RsaSha256) {
HeaderCanonicalizationAlgorithm = DkimCanonicalizationAlgorithm.Simple,
BodyCanonicalizationAlgorithm = DkimCanonicalizationAlgorithm.Simple,
        AgentOrUserIdentifier = "@eng.example.com",
        QueryMethod = "dns/txt",
    };

    // Prepare the message body to be sent over a 7bit transport (such as older versions of SMTP).
    // Note: If the SMTP server you will be sending the message over supports the 8BITMIME extension,
    // then you can use `EncodingConstraint.EightBit` instead.
    message.Prepare (EncodingConstraint.SevenBit);

    signer.Sign (message, headers);
}
See Also