On Sat, Nov 20, 2010 at 10:57:58AM -0500, Carlos Mennens wrote: [snip]
> So I'm done trying to ask nicely and it doesn't seem like I'm going to > get any results so now I'd like to get back to my original question, > what's the best way via Postfix to stop them from sending mail to my > Postfix server? How can I block them so their mail is rejected? I'd > like to have a method in '/etc/postfix/' that I can block specific > clients (I'm assuming "clients" is the proper name for servers that > try and communicate with my SMTP server) basic on IP(s). > > Can someone please tell me the recommended way to do this in Postfix? > I'm sure most of you veterans have had a time where you had to stop a > specific server from sending your Postfix server email. How do I go > about this? Hello, Apologies if I've missed the point of your question but here's how I successfully do what I *think* you're trying to do : Here's my /etc/postfix/main.cf : smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_unauth_pipelining, check_client_access hash:/etc/postfix/smtp_client_access, check_sender_access hash:/etc/postfix/smtp_sender_access, reject_unknown_sender_domain, reject_rbl_client zen.spamhaus.org, reject_invalid_hostname For the 'smtp_client_access' and 'smtp_sender_access' references to work you first need to create them using a text editor (mine's Vim) and then run as root : postmap hash:smtp_client_access With the same applying for the 'smtp_sender_access' file. That command assumes you're in the /etc/postfix directory. Restart Postfix after applying the command/s. The format of my smtp_client_access file is like so : .dodgyhost.tld REJECT Spam sewer. .evilspammer.tld REJECT Spam sewer. The format of my smtp_sender_access file is like so : barrelshoot.tld REJECT No thanks. al...@example.tld OK example.tld REJECT No thanks. freespam.tld REJECT Go away. interesting101@ OK HTH. Regards, Pete.
