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Re: backwards compatibility of OK in header_checks still needed?

From: Wietse Venema (wietseporcupine.org)
Date: Mon Mar 16 2009 - 05:47:59 CDT

Henk van Oers:
>
> Noel Jones wrote:
>
> [...]
>
> > There is no bypass mechanism for header_checks.
>
> It whould be nice to have one.

Just to clue you in, here is an example SMTP dialog.

    220 server.example.com ESMTP
    HELO client.example.com
    250 server.example.com
    MAIL FROM:<sender>
    250 Ok
    RCPT TO:<recipient1>
    250 Ok
    RCPT TO:<recipient2>
    250 Ok
    RCPT TO:<recipient3>
    250 Ok
    DATA
    354 End message with <CR><LF>.<CR><LF>
    From: sender
    To: recipients...
    Subject: Mogge...

    [text body here]
    .
    550 Message content rejected

When recipient1 and recipient3 header checks want to reject the
mail, but recipient2 is not header checked, how shall the SMTP
server respond? It can send only one reply to the client.

        Wietse