On Fri, 2010-11-05 at 12:41 -0700, Alejandro Facultad wrote: > Thanks but, is it right if coming from Internet I enter to your mail > server and after that I send a message from your mail account to your > project manager's mail account telling he's an asshole ??? > > I now SPF is ideal for avoid this behavior, but I think the first > example is an "open relay" feature. > > Thanks a lot. > > > > ______________________________________________________________________ > De: Noel Jones <njo...@megan.vbhcs.org> > Para: postfix-users@postfix.org > Enviado: viernes, 5 de noviembre, 2010 16:32:01 > Asunto: Re: Open relay question > > On 11/5/2010 2:28 PM, Alejandro Facultad wrote: > > Dear, I'm in Internet and testing if my mail server is an Open > > Relay. So I execute: > > > > telnet mail.mycompany.com 25 > > > > After that I do: > > > > mail from: us...@mycompany.com > > OK > > rcpt to: us...@mycompany.com > > OK > > data > > This is a test !!! > > . > > QUEUED > >
Hello, If you can connect into a mail server externally (e.g mycompany.com) and send mail through that server without having to provide any means of authentication to another domain entirely (e.g myothercompany.com) then that is an open relay. AFAICT your example used the same domain. If the mail server was configured to accept mail for 'mycompany.com' then it's doing its job in your example. HTH. Regards, Pete.
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