Re: [EXIM] Sender verification...

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Auteur: Hugh Sasse
Date:  
À: John Burnham
CC: exim-users
Nouveaux-sujets: [EXIM] serving as a backup MX host
Sujet: Re: [EXIM] Sender verification...
On Wed, 16 Jun 1999, John Burnham wrote:

>
> > produce a failure for messages with "From: " and "Sender: " and
> > "Reply-To" lines of "<>",(i.e. spam with no proper addresses in)
> > even if sender_try_verify is used rather than sender_verify?
> >
> > What I am trying to do is block the stuff that is obviously rubbish,
> > but not reject mail due to temporary problems with our heavily loaded
> > network. Is that about right?
>
> Sorry to tell you this but <> is a perfectly valid value for from:,
> sender: and reply-to:. Read the relevant RFCs. Do not reject mail


    For "Sender: " it means it is from a mailer deamon, but if it
    is '<>' in all three of those then something is wrong -- from
    my reading of the Exim manual, headers_sender_verify_errmsg 
    in particular.  If that is not true (and I have just failed
    to find the string "<>" in RFCs 822, 2076) then what is the
    purpose of headers_sender_verify_errmsg?


    I'm not sure how the try vs non-try versions of sender_verify
    interact with this hehaviour.


> with these values....
>  John.
> --
> John Burnham
> jpburnham@???       

>
> --
> *** Exim information can be found at http://www.exim.org/ ***
>
>

    Hugh
    hgs@???



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