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Here a quick run down on how to block specific domains in postfix.

First edit the /etc/postfix/main.cf file

Add the following line:

smtpd_sender_restrictions = hash:/etc/postfix/deny

next create the deny file

/etc/postfix/deny (this is where you will put your list of domains)

Use this format:

yahoo.com    REJECT

Now use port map to that Postfix can read the file at startup.

postmap hash:/etc/postfix/deny

Now restart postfix

service postfix restart

Send a email from the domain… Yahoo for example to test, look at the log file.

tail /var/log/maillog

Note that after you add to the deny file you will need to use the portmap command again and restart postfix.

written by admin \\ tags: block, Domain, domains, email, linux, mail, main.cf, microsoft, Name, postfix, server, yahoo

I am using postifx and did the following which works just fine.

Edit /etc/aliases

added or edit an entry for root to forward email, it should be on the very bottom.

root: [email protected]

Save the file

Run the program ‘newaliases’ which will update the alias database.

written by admin \\ tags: address, aliases, email, external, forward, root