On 8/5/2012 10:13 PM, Adam NEVERT wrote: > > The client would be on my local network only /192.168.0.*/ and for > any email sending I configure postfix so that it tries to use TLS if > the client support it. > > So to sum up I want the user /maintenance/ to be able to send any > email only from /192.168.0.*/ and only to my domain /sample.com /(to > avoid spaming if an indelicate user understands this user doesn't > need authenticating). >
Thank you for providing a better description of the requirements. Now a simple solution can be found. # main.cf smtpd_sender_restrictions = reject_non_fqdn_sender check_sender_access hash:/etc/postfix/local_only # local_only maintena...@example.com reject_unauth_destination Of course, replace example.com above with your local domain name. If you already have a smtpd_sender_restrictions defined in main.cf, the example above will need to be inserted before any other restrictions, ie. before permit_mynetworks. -- Noel Jones