/// <summary>
/// Is called when email domain target servers resolve operation has completed.
/// </summary>
/// <param name="to">RCPT TO: address.</param>
/// <param name="op">Asynchronous operation.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>to</b> or <b>op</b> is null reference.</exception>
private void EmailHostsResolveCompleted(string to, Dns_Client.GetEmailHostsAsyncOP op)
{
if (to == null)
{
throw new ArgumentNullException("to");
}
if (op == null)
{
throw new ArgumentNullException("op");
}
if (op.Error != null)
{
LogText("Failed to resolve email domain for email address '" + to + "' with error: " + op.Error.Message + ".");
Dispose(op.Error);
}
else
{
StringBuilder buf = new StringBuilder();
foreach (HostEntry host in op.Hosts)
{
foreach (IPAddress ip in host.Addresses)
{
m_pTargets.Add(new Relay_Target(host.HostName, new IPEndPoint(ip, 25)));
}
buf.Append(host.HostName + " ");
}
LogText("Resolved to following email hosts: (" + buf.ToString().TrimEnd() + ").");
BeginConnect();
}
op.Dispose();
}