Class DkimDnsKeyResolver

Default DNS-based DKIM key resolver (RFC 6376 §3.6). Queries the TXT record at <selector>._domainkey.<domain> and parses the response.

Inheritance

object

DkimDnsKeyResolver

Implements

IDkimKeyResolver

Inherited Members

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

object.GetType()

Namespace: DRIT.Mail.Rfc.Dkim

Assembly: DRIT.Mail.dll

Syntax

public sealed class DkimDnsKeyResolver : IDkimKeyResolver

Constructors

DkimDnsKeyResolver()

Initializes a new instance of the DkimDnsKeyResolver class with a default DNS client.

Declaration

public DkimDnsKeyResolver()

DkimDnsKeyResolver(DnsClient)

Initializes a new instance of the DkimDnsKeyResolver class with the specified DNS client.

Declaration

public DkimDnsKeyResolver(DnsClient dnsClient)

Parameters

Type	Name	Description
DnsClient	dnsClient	The DNS client to use for TXT record lookup.

Methods

Resolve(string, string)

Resolves the DKIM key record for the given selector and domain by querying the TXT record at <selector>._domainkey.<domain>.

Declaration

public DkimKeyRecord? Resolve(string selector, string domain)

Parameters

Type	Name	Description
string	selector	The selector (s= tag).
string	domain	The signing domain (d= tag).

Returns

Type	Description
DkimKeyRecord	The parsed DkimKeyRecord, or null if no TXT record was found.

Exceptions

Type	Condition
DkimException	Thrown on a temporary DNS failure (timeout, server error).

Implements

IDkimKeyResolver