Posts Under 'Postfix'

How to send a copy of every email to a given email address in postfix

Recently, I wanted to send a copy of every email of particular person to a given email address using postfix. I was looking for solution in Postfix documents and i found simple way to do this using – Automatic BCC recipients. To achieve this Postfix provides three mechanisms: 1. always_bcc = address Deliver a copy […]

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Blocking SPAM using Postfix header_checks and SpamAssassin

We have dedicated server with Godaddy running Postfix as a mail sever and SpamAssassin as a mail filter. There are some contact mails specified on our websites, which were getting 1000’s of spam mails daily. SpamAssassin is active on our server but it was just adding extra [SPAM] in the subject of the emails. I […]

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Postfix Header Checks

Postfix header checks to reject spam mails : /^Subject:.*=\?(big5|euc-kr|gb2312|ks_c_5601-1987)\?/ REJECT No foreign character sets, please. /^(Content-Type:.*|\s+)charset\s*=\s*”?(big5|euc-kr|gb2312|koi8|Windows-1251|ks_c_5601-1987)”?/ REJECT No foreign character sets, please. /^(Content-Type:.*|\s+)charset\s*=\s*”?(Windows-1251)\?/ REJECT Probably a windows virus. /^From:.*\@.*\.r[uo]/ REJECT No Russian or Romanian mail, please. /^From:.*\@.*\.bg/ REJECT No foreign character sets for bg, please. /^From:.*\@.*\.nz/ REJECT No foreign character sets for nz, please. /^From:.*\@.*\.lb/ […]

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How to filter spam with Spamassassin and Postfix in Debian

Install Spamassassin in Debian #apt-get install spamassassin spamc spamassassin package can also be integrated into a Mail Transport Agent such as postfix. Preparation By default Spamassassin will run as root users when you install from debian repository and is not started to avoid that, we are going to create a specific user and group for […]

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