On 11/22/2016 4:22 AM, Pedro David Marco wrote:
> Hi,
> 
> i was wondering to what extent is it a good idea to use to use the
> sender restriction "reject_non_fqdn_sender" to block some spam...

I use this rule.  It rarely blocks any spam, but seems quite safe in
that it never blocks legit mail.  YMMV.

> what would happen with mails from <> ??

The null sender is considered fully-qualified and not rejected by
this rule.



  -- Noel Jones

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