////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary> Reads mail exchange. </summary>
///
/// <param name="reader"> The reader. </param>
///
/// <returns> The mail exchange. </returns>
////////////////////////////////////////////////////////////////////////////////////////////////////
private static MailExchange ReadMailExchange(BinaryReader reader)
{
MailExchange mailExchange = new MailExchange();
mailExchange.Preference = ReadUInt16BE(reader);
mailExchange.HostName = ReadDomainName(reader);
return(mailExchange);
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary> Gets mail exchange aliases. </summary>
///
/// <param name="domainName"> domainName. </param>
/// <param name="answer"> The answer. </param>
///
/// <returns> An array of string. </returns>
////////////////////////////////////////////////////////////////////////////////////////////////////
private static string[] GetMailExchangeAliases(string domainName, DnsMessage answer)
{
List <string> aliases = new List <string>();
foreach (DnsResource resource in answer.Answers)
{
if (resource.QueryType == QueryType.MailExchange && resource.Name == domainName)
{
MailExchange mailExchange = (MailExchange)resource.Content;
aliases.Add(mailExchange.HostName);
}
}
return(aliases.ToArray());
}