Re: Postfix doesn't reject empty senders

[Michael Loftis <mloftis@modwest.com>]

It is an RFC requirement to accept <> as a valid MAIL FROM  -- almost all 
bounce messages use this as well as certain other circumstances, to 
indicate they do not wish to receive a bounce message in the event of a 
delivery error.  I don't even think that postfix allows it to be turned off 
at all.

--On Wednesday, January 28, 2004 18:48 +0100 Tomàs Núñez Lirola 
<tomas@grupoeon.net> wrote:

> Hi
> My smtp server (postfix) was receiving a lot of mails with empty senders
> ("mail from:<>"), and it sends them as they was from
> "MAILER-DAEMON@mydomain". I want to change this behaviour, so I added to
> main.cf the line
>
> 'smtpd_sender_restrictions = reject_non_fqdn_sender'
>
> thinking that "<>" is not a fqdn. But after that, postfix still sends
> them. So  I added
>
> 'smtpd_sender_restrictions = reject_non_fqdn_sender,
> reject_unknown_sender_domain'
>
> but this way I get the same response:
>
> helo k
> 250 mydomain.com
> mail from:<>
> 250 Ok
> rcpt to:some@address.com
> 250 Ok
> data
> 354 End data with <CR><LF>.<CR><LF>
> fds
> fdsfsf
> fdsfs
> .
> 250 Ok: queued as B4F7C3EFF
> quit
> 221 Bye
>
>
> RTFM'ing, I don't find any more option to reject this kind of senders, so
> I  don't know what to do...
> Am I doing anything wrong? Can anyone please help me?
>
> Thank you very much
>
>
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--
Michael Loftis
Modwest Sr. Systems Administrator
Powerful, Affordable Web Hosting
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