[plug] postfix issue

[Ben Jensz]

Well if you're currently on an IP address that shouldn't be allowed to 
send email through the mail server you've setup type this:

telnet 1.2.3.4 25

HELO mycomputer
MAIL FROM: me at myself.com
RCPT TO: someaddress at random.com

(1.2.3.4 = whatever IP address the mail server has)

Alternatively you could try this from someone's iiNet user space that I 
just discovered with Google:

http://members.iinet.net.au/~remmie/relay/

Tested it on a mail server I run on Postfix and it didn't relay a 
thing.  Just specify a recipient address that ISN'T on the mail server 
you're testing.


/ Ben


Jon Miller wrote:

>If there are any postfix guru on the list I would like to find out how to block spam or make sure that there is no relaying happening.
>I believe there is a way to check the email recipient domain and if it does not match the domain that the email is delivered to it rejects or deletes it.  Can someone shine some light on this?
>I was reading a sample file from postfix sample_smtpd.cf  It appears to have some of the command parameters that I'm interested in.  Do I just add these parameters in the main.cf file or do I have to direct postfix to look at this file for additional parameters?
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>Thanks
>
>Jon L. Miller, MCNE, CNS
>Director/Sr Systems Consultant
>MMT Networks Pty Ltd
>http://www.mmtnetworks.com.au
>
>"I don't know the key to success, but the key to failure
> is trying to please everybody." -Bill Cosby
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