public DnsReplyCode GetMXRecords(string domain, out MX_Record[] mxRecords)
{
mxRecords = null;
ArrayList answers = QueryServer(domain, QTYPE.MX, 1).Answers;
if (answers != null)
{
SortedList mx = new SortedList();
ArrayList duplicateList = new ArrayList();
foreach (object answer in answers)
{
if (answer is MX_Record)
{
MX_Record mxRec = (MX_Record)answer;
if (!mx.Contains(mxRec.Preference))
{
mx.Add(mxRec.Preference, mxRec);
}
else
{
duplicateList.Add(mxRec);
}
}
}
mxRecords = new MX_Record[mx.Count + duplicateList.Count];
mx.Values.CopyTo(mxRecords, 0);
duplicateList.CopyTo(mxRecords, mx.Count);
}
if (mxRecords == null || mxRecords.Length == 0)
{
return(DnsReplyCode.NoEntries);
}
return(DnsReplyCode.Ok);
}
/// <summary>
/// Gets MX records.(MX records are sorted by preference, lower array element is prefered)
/// </summary>
/// <returns></returns>
public MX_Record[] GetMXRecords()
{
MX_Record[] mxRecords = (MX_Record[])FilterRecords(m_pAnswers, typeof(MX_Record)).ToArray(typeof(MX_Record));
SortedList mx = new SortedList();
ArrayList duplicateList = new ArrayList();
foreach (MX_Record mxRecord in mxRecords)
{
if (!mx.Contains(mxRecord.Preference))
{
mx.Add(mxRecord.Preference, mxRecord);
}
else
{
duplicateList.Add(mxRecord);
}
}
mxRecords = new MX_Record[mx.Count + duplicateList.Count];
mx.Values.CopyTo(mxRecords, 0);
duplicateList.CopyTo(mxRecords, mx.Count);
return(mxRecords);
}