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(Delphi ActiveX) MX Lookup Mail Server Domain by Email AddressHow to find the mail server for a given email address. Returns the domain name of the primary mail server. Note: This example requires Chilkat v11.0.0 or greater.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB; ... procedure TForm1.Button1Click(Sender: TObject); var success: Integer; dns: TChilkatDns; json: TChilkatJsonObject; emailAddr: WideString; i: Integer; count_i: Integer; domain: WideString; begin success := 0; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. dns := TChilkatDns.Create(Self); json := TChilkatJsonObject.Create(Self); emailAddr := 'bob@example.com'; // This gets all MX domains for an email address. (Typically one domain.) // The preferred domain will be at index 0 (see below). success := dns.Query('MX',emailAddr,json.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(dns.LastErrorText); Exit; end; i := 0; count_i := json.SizeOfArray('answer.mx'); while i < count_i do begin json.I := i; domain := json.StringOf('answer.mx[i].domain'); Memo1.Lines.Add(domain); i := i + 1; end; end; |
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