Antonio Leding:
>  >>> START Recipient address RESTRICTIONS <<<
> 
> Lots of log messages related to SMTPD_RECIPIENT_RESTRICTIONS evaluation
> 
>  >>> END Recipient address RESTRICTIONS <<<
>  >>> START Recipient address RESTRICTIONS <<<
> 
> Lots of log messages related to SMTPD_RELAY_RESTRICTIONS evaluation
> 
>  >>> END Recipient address RESTRICTIONS <<<
>  >>> CHECKING Recipient address VALIDATION MAPS <<<

Both evaluate the RCPT TO address. Both really work in the same
way, but they serve a very different purpose.

- relay restrictions should never 'permit' exceptions for client,
  helo, sender, or recipient, because that can make your system an
  open ralay.

- recipient restrictions can safely have 'permit' exceptions for
  client, helo, sender, or recipient, because the relay restrictions
  protect the system from becoming an open relay.

        Wietse

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