Reject an email message with too many recipients with Postfix
The following config will reject a message when more than 10 recipients are in the TO: and/or CC: fields.
/etc/postfix/main.cf:
# restrict based on message header content
header_checks = pcre:/etc/postfix/header_checks
/etc/postfix/header_checks:
/^To:([^@]*@){10,}/ REJECT Sorry, your message has too many recepients.
/^Cc:([^@]*@){10,}/ REJECT Sorry, your message has too many recepients.
Solution based on a post at linuxquestions.org.
1 Comment
1. Willy replies at 29th November 2013, 8:21 am :
So I´m with the same problem, when I use with one digit is ok, how to {1,}…{9,} after this, like you don´t works.
How you fixed this?
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