text_combined: andras galos djdpsonetinformhu hi recently setup fake secondary mx record domain reduce spam load primary works well many spam clients connects first time since port 25 firewalled works spamming clients try works legit mailers try primary mx first case greylisting step forward secondary timeout next time try primary theyll succedd greylisting period elapsed try implement setup fake secondary mx drops every client except messages several spamtrap recipients problem set postfix fake secondary reject mail except spamtrap messages think confuse legit mtas get 4xx secondary get response secondary may try send message instead primary additionally may show error message sender could confuse senders im searching solution access reject action postfix could drop connection without smtp error message something like 421 reply code 421 causes postfix disconnect immediately smtp error one im searching example new 499 code would useful could cause postfix immediately drop connection without sending smtp reply possibility could filter spamtrap mail incoming spam flow reporting handling mail would remain unsuccessful without error message showing legit client mtas mx operational better try primary next time recipient_access table could look like bnhbryzn4domain ok yygnkyrp6domain ok domain 499 text using fake secondary mx lost 7080 spam spamtraps receive pain use huge amount spam spamming im still searching good implementation fake mx badly reject everything except spamtrap mail way implement best regards andras galos wed 06 aug 2008 043739 0100 postfix fake mx