Haven't you tried postfix spf verification for your mail server with proper -all dns configuration for your domain?
Anvar Kuchkartaev an...@anvartay.com Original Message From: Omniver Sent: domingo, 10 de diciembre de 2017 21:07 To: postfix-users@postfix.org Subject: How to restrict sending to certain local addresses except when sent from mail server I have a mail server receiving internet mail for my primary domain and for a few virtual domains. I'm having some spam issues with internet mail coming in for address@mydomain for addresses intended for use by local tools/scripts which are listed in /etc/aliases. Any ideas on how can I make it that postfix accepts mail for these addressesI *only* if they were sent by my mail server? -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html
