Class SmtpCertificateValidation

Provides SSL certificate validation callbacks for use with CertificateValidationCallback.

Inheritance

object

SmtpCertificateValidation

Inherited Members

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

Namespace: DRIT.Mail.Rfc.Smtp

Assembly: DRIT.Mail.dll

Syntax

public static class SmtpCertificateValidation

Methods

AcceptAll(object, X509Certificate?, X509Chain?, SslPolicyErrors)

Accepts any certificate, regardless of validity. This callback disables all certificate validation and should only be used in testing. Never use in production.

Declaration

public static bool AcceptAll(object sender, X509Certificate? certificate, X509Chain? chain, SslPolicyErrors sslPolicyErrors)

Parameters

Type	Name	Description
object	sender
X509Certificate	certificate
X509Chain	chain
SslPolicyErrors	sslPolicyErrors

Returns

Type	Description
bool	Always true.

ValidateChainAndHostname(object, X509Certificate?, X509Chain?, SslPolicyErrors)

Validates the server certificate chain and hostname. This is the production-safe default. It accepts the certificate only when the platform has validated both the chain and the hostname match.

When SmtpClient calls AuthenticateAsClient(string) with the target hostname, the platform already checks that the certificate's Subject CN or Subject Alternative Names match the specified hostname. If everything passes, sslPolicyErrors will be None.

Declaration

public static bool ValidateChainAndHostname(object sender, X509Certificate? certificate, X509Chain? chain, SslPolicyErrors sslPolicyErrors)

Parameters

Type	Name	Description
object	sender
X509Certificate	certificate
X509Chain	chain
SslPolicyErrors	sslPolicyErrors

Returns

Type	Description
bool	true if sslPolicyErrors is None; otherwise false.