Q. I’ve Postfix based CentOS Linux server. I need to blacklist email ID: user@abadboy.com . How do I blacklist email address with postfix? I also have spamassassin software installed.
A. By default, the Postfix SMTP server accepts any sender address. However you can block / blacklist sender email address easily with Postfix. It has SMTP server access table.
Open /etc/postfix/sender_access file
# cd /etc/postfix
# vi sender_access
Append sender email id as follows:
user@abadboy.com REJECT
Save and close the file. Use postmap command to create a database:
# postmap hash:sender_access
Now open main.cf and add code as follows:
smtpd_recipient_restrictions = check_sender_access hash:/etc/postfix/sender_access
Save and close the file. Restart / reload postfix MTA:
# /etc/init.d/postfix restart
You can also use spamassassin to blacklist email address. Just add to your own spamassassin configuration or to /etc/mail/spamassassin/local.cf file:
# vi /etc/mail/spamassassin/local.cf
Append blacklist as follows:
blacklist_from user@abadboy.com
Save and close the file. Restart spamassassin:
# /etc/init.d/spamassassin restart
spamassassin will marke mail as SPAM instead of rejecting the same.
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Hi,
i wants to accept mail from blocked users and discard mail in Postfix server itself with out any bounce back.
Pls give some tips ASAP…………
@dnaduz you may have fixed it, however it could be that you need to move the rule up the line….that worked for me!
It doesn’t work am still getting emails from an address I blocked :(
I want to discard any email that is recieved on my domain account i.e anonymous@mydomain.com using postfix. Can you guide me regarding it ?
Hi,
I have MySQL table listing allowed sender email addresses. I like to receive emails only from allowed people. Can I do this using MySQL instead of file? Also, I like to collect email address of sender who sent email, but wasn’t allowed so I can send him/her custom auto reply. Any way to do this?
Thanks
How do i remove separate spam mail id
Hi,
I am currently using FC21 as my email server. and I followed the instructions here but I still get annoying emails from user@qq.com with chinese characters that I don’t understand.
Please help me.
Thank you