Thanks Andreas,
The reject would be '553 Mail from ... not allowed', so it sounds like
a dead end trying to configure postfix to handle this.
Suggestions on how to workaround are welcome.
Thanks,
~ Remus
On Nov 18, 2009, at 1:12 AM, lst_ho...@kwsoft.de wrote:
Zitat von "cont...@rusanu.com" <cont...@rusanu.com>:
Is there a way to configure postfix to use a relay only if direct
delivery is rejected? The case being a web application that has to
send notification to subscribers, but some servers reject the
connection (app IP originates from AWS EC2). I want those cases to
be retried using a paid SMTP relay like authsmtp.com. However I
don't want to use the relay for everything since it costs per mail.
If it is rejected with a permanent error code (5xx) no retry an no
fallback will happen. This is required by RFC.
If the reject is with some temporary reject code or the connection
is not accepted at all you need the fallback_relay parameter.
Regards
Andreas
