Bastian Blank-3 wrote > On Fri, Jan 20, 2017 at 02:01:27PM -0700, Postfix User wrote: >> check_sender_access $virtual_alias_maps, > > You are creating an open relay, don't do that.
Actually I am not creating an open relay, $virtual_alias_maps contains only internal addresses. When I try sending e-mail from not authenticated internal user to external address, or from external to another external address, I get "554 5.7.1 <recipient@domain>: Relay access denied" -- View this message in context: http://postfix.1071664.n5.nabble.com/Prevent-Backscatter-tp88359p88375.html Sent from the Postfix Users mailing list archive at Nabble.com.
