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From: bobf@plan9.bell-labs.com
To: 9fans@cse.psu.edu
Subject: Re: [9fans] norelay option in /mail/lib/smtpd.conf
Date: Tue,  4 Jul 2000 11:05:34 -0400	[thread overview]
Message-ID: <200007041505.LAA25021@cse.psu.edu> (raw)

> If we are allowed to write:
> relay			off	# disallow relaying
> it will be more clear for everyone.

that's reasonable.  you can change the code in
/sys/src/cmd/upas/smtp/spam.c to reverse the
sense of the parse.

> By the way, smtpd can controll incomming mails
> using sender-receiver address pair.
> Therefore relay filter using the pair will be more powerful.

no, the sender domain is easily forged.  almost all relay
probes that we see claim to be from our domain.  the peer ip
address is more difficult to forge, so we use it.



             reply	other threads:[~2000-07-04 15:05 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-07-04 15:05 bobf [this message]
  -- strict thread matches above, loose matches on Subject: below --
2000-07-04 13:52 arisawa

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