On 6/26/2012 3:12 PM, lutz.niede...@gmx.net wrote: > We need a way to specify a second relay if the first does not answer.
This is exactly what MX records are for. On the internal server specify something like #main.cf relayhost = gateway.example.com and arrange for appropriate MX records for gateway.example.com. These can be private .local addresses, or an internal-only view. Alternately, use relayhost = [gateway.example.com] smtp_fallback_relay = [gatew2.example.com] This doesn't prevent you from using a customized transport, but it does assume SMTP. -- Noel Jones
