Custom rules for spamassasin?

Les Mikesell lesmikesell at
Sun Nov 13 19:17:16 UTC 2005

On Sun, 2005-11-13 at 12:39, Alexander Dalloz wrote:

> > > Perhaps in this case a better solution is that his MTA should be
> > > configured to reject any mail coming in with a HELO name that is not
> > > true (ie, your mailserver external hostname or IP).
> Fully agreed. Better rejecting the forgery at SMTP time than to first
> accept it and then classify it as spam.

Note that there is an RFC that says you MUST NOT reject on a mismatch
between the HELO name and the connecting IP address.  Multi-homed
servers are not expected to adjust their name to match the interface
that happens to be used for each connection and it is common for
servers to live behind a NAT gateway and not even know the public
IP address in use. 

Of course on your own machine you can discard as much mail as you want.

  Les Mikesell
    lesmikesell at

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