On Thu, Dec 11, 2008 at 02:32:52PM -0300, Gerardo Herzig wrote:

> Hi all. Im facing a ugly situation. Some spammer is using the webmail to
>  send spam. The thing is, hes using an actual account/password (from my
> server)to authenticate agains the webmail, and then sending mail from
> "UK LOTTO <[EMAIL PROTECTED]>"...crap!!
> 
> Since i have
> smtpd_recipient_restrictions = permit_sasl_authenticated,
> permit_mynetworks, reject_unauth_destination
> 
> This dude is authenticated, so...what can i do? Cant i restrict or check
> the address which is sending and forbidde those which are not of my domain?

Change the password for the compromised account. Or do you offer free
sign-up?

-- 
        Viktor.

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