Re: Stopping Frequently Forged Domains

From: Wietse Venema (no email)
Date: Sat Jun 01 2002 - 10:03:40 EDT


Existing primitives can do this already.

The example stops mail from yahoo.com/hotmail.com unless it comes from
specific systems.

        Wietse

smtpd_sender_restrictions =
    check_sender_access hash:/etc/postfix/strict_sender_map

smtpd_restriction_classes = strict_client_domain
 
/etc/postfix/strict_sender_map:
    yahoo.com strict_client_domain reject
    hotmail.com strict_client_domain reject

strict_client_domain =
    check_client_access hash:/etc/postfix/strict_client_map
 
/etc/postfix/strict_client_map:
    yahoo.com OK
    hotmail.com OK
    friendly.com OK

friendly.com is a host that sends/forwards legitimate mail
with a hotmail etc. sender address.
-
To unsubscribe, send mail to with content
(not subject): unsubscribe postfix-users








Hosted Email Solutions

Invaluement Anti-Spam DNSBLs



Powered By FreeBSD   Powered By FreeBSD