[CLUE-Admin] Re: CLUE-Tech post from admin@clue.denver.co.us requires approval

[Lynn Danielson]

David Anselmi wrote:

> No, we're not an open relay (just tried it), at least not generally.
>
> My feeling on this is that the mail server should refuse mail from 
> users at clue.denver.co.us that isn't generated locally.  Seems that exim 
> does that easily enough, don't know about the sendmail we're using.
>
> I don't see any fix for Mailman trusting the From line though, other 
> than filtering before it gets to Mailman.


OK, so we don't allow open relaying (thanks for verifying this) but we are
vulnerable to direct emai abuses on port 25.