Tag Archives: email

Don't use Hotmail.com, Live.com, Outlook.com ...

By | January 30, 2016

Have you ever missed an important event, because you haven't got the invitation email, but an invitation email was evidently sent to you? If so, you are probably using an email address at hotmail.com or outlook.com or in general Microsoft's mail services, also including addresses at live.com and other  domains. The reason for this is… Read More »

Limit Number of Recipients in To and Cc with Postfix for Authenticated Users

By | July 5, 2014

The simplest way to restrict the number of recipients in To or Cc with Postfix is the use of HEADER_CHECKS. You put in your Postfix main.cf a line like this: header_checks = pcre:/usr/local/etc/postfix/header_checks And you create a file /usr/local/etc/postfix/header_checks which contains this: /^To:([^@]*@){10,}/ REJECT Sorry, your message has too many recipients. /^Cc:([^@]*@){10,}/ REJECT Sorry, your message has too… Read More »