Hi, >> I thought I understood how to block a specific domain from being able >> to send mail to users on my server, but I must be doing something >> wrong. In main.cf I have: >> >> check_sender_access hash:/etc/postfix/sender_access, >> check_client_access hash:/etc/postfix/client_access >> >> among others, in the smtpd_recipient_restrictions section. In >> client_access I have the domains that should be allowed: >> >> mail.mydomain.com OK >> >> In sender_access I have a list that should be blocked: >> >> .domain1.com REJECT >> .domain2.com REJECT > > This syntax requires that smtpd_access_maps IS NOT listed in > parent_domain_matches_subdomains. If you stick to the default > value, drop the initial dot in .example.com to match example.com > and all subdomains.
Thank you everyone for all of your help. These are the instructions that got it to work for me. Although I'm not sure why. I don't have parent_domain_matches_subdomains anywhere in my postfix configuration, so I assumed the leading dot was necessary to match subdomains. Why is this not necessary? If you could direct me to where I should RTFM, that would be appreciated. Thanks, Alex
