Blacklist question

I'd like to black list an entire .domain rather than example.com
I'm trying @*.domain to catch the spammers for example .today, .buzz, etc. Will with work that way?

 

Are you trying to block an entire top level domain?
https://en.wikipedia.org/wiki/Top-level_domain

 

to block an entire TLD like .pro, .bid,.top, etc...

create one -pcre file, in example reject_domains.pcre and put the desired tld domains inside:

Code:

# nano /etc/postfix/reject_domains.pcre

/\.top$/ DISCARD
/\.pro$/ DISCARD
/\.business$/ DISCARD
/\.br$/ REJECT Sorry, temporarily rejected TLD .BR because spam

you can see the difference in the last line: if you wish to give an explanation to the sender for some temporary situation, then use REJECT, and at the end of that same line you can write some explanation about that specific domain.

Save and exit.

Now edit /etc/postfix/main.cf and search the smtpd_sender_restrictions section to include this line:

Code:

# nano /etc/postfix/main.cf

smtpd_sender_restrictions =
check_sender_access pcre:/etc/postfix/reject_domains.pcre

Save and exit

Restart postifx:

Code:

# service postfix restart

that's all

 

you are right!