Try
    dim SMTPc as SMTP
    dim slash as string ="/"    ' Depende del tipo de servidor si es en B4J
    SMTPc.Initialize("obra.constructor1.cl", 465, "com@constructor1.cl", "123223", "SMTPc")
    SMTPc.UseSSL = True
    SMTPc.HtmlBody = False
    'SMTPc.AdditionalHeaders.Put("Content-Type","application/pdf")
    SMTPc.Sender = "Compras Constructor  <com@constructor1.cl>"
    SMTPc.to = Array  As String(strEmails)
    SMTPc.BCC =  Array  As String(strCCEmails)
    SMTPc.Subject = "ORDEN DE COMPRA " & strEmpresa
    SMTPc.Body = "Se adjunta Orden de Compra" & Chr(13) & Chr(10) & Chr(13) & Chr(10) & Chr(13) & Chr(10) & " Atentamente " & Chr(13) & Chr(10) &" Compras Constructor"
    SMTPc.AddAttachment(File.DirApp & slash &  DownloadFolder & "OC-" & IDOBRA & slash,OCOMPRA &"-ordendecompra.pdf")
    SMTPc.Send
    Catch
        Log("Email NO enviado  ")
    End Try