On 2/2/2011 2:05 PM, Joe wrote:
On 02/02/2011 10:28 AM, Steve Jenkins wrote:
After watching the recent thread about filtering
restrictions, it's
got me curious as to whether mine are optimal. I've recently
added
support for backscatterer checking in my restrictions, and I
moved
Stan's fqrdns.pcre check higher in my list per his
suggestion in an
earlier thread. Mine now look like:


smtpd_recipient_restrictions =

...
check_sender_access hash:/etc/postfix/check_backscatterer,

I think your backscatterer setup may not work - the stanza
below is the only place it's used on our servers:

smtpd_data_restrictions =
...
check_sender_access btree:/etc/postfix/backscatterer,
reject_unauth_pipelining


the backscatterer check works in either smtpd_recipient_restrictions or smtpd_data_restrictions. The advantage of putting it in smtpd_data_restrictions is that it won't reject sender verification probes from other systems.


 -- Noel Jones

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