Am 11.01.2014 18:57, schrieb Benny Pedersen: > Alexandre Ellert skrev den 2014-01-10 22:12: >> How can I tell Postfix to queue the mail in case of remote reply 4xx ? > > 4xx is softfails, so you already do
but that *does not* help in case of the OP read the thread start it is simply impossible doing on one hand RCPT-verification because no verification on the root-cause (webserver) but at the same time not reject messages from the webserver in case verification on the final destination is not possible due greylisting or other temp errors there is no workaround at all, fix the web-application or live with the bad impact of not doing so