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
>
> The mail from user1 to user2 (both from my company) was sent
> OK !!!
>
> Is this behavior normal or is it an open relay ??? Can I sent
> a message from one local user to another local user, being
> that I come from Internet and not from LAN ???
>
> Thanks a lot
>
> A.F.
>
>

Yes, that's normal.  "Open relay" means the RCPT can be an 
unrelated domain eg. @hotmail.com.


      

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