private void buttonSelectCertificate_Click(object sender, EventArgs e)
{
openFileDialog.Title = Strings.Localize("Private key file");
openFileDialog.Filter = "*.*|*.*";
openFileDialog.FileName = "";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
textDKIMPrivateKeyFile.Text = openFileDialog.FileName;
}
}