Re: [Exim] Reject certain HELO arguments

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Lähettäjä: Tabor J. Wells
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Vastaanottaja: exim-users
Aihe: Re: [Exim] Reject certain HELO arguments
On Wed, Apr 14, 2004 at 11:53:32PM +0200,
Franz Georg Khler <lists@???> is thought to have said:

> On Fr, Mär 12, 2004 at 03:13:03 +0100, Tamas TEVESZ <ice@???> wrote:
> > On Fri, 12 Mar 2004, Frank Elsner wrote:
> >>> is exim able to reject certain HELO/EHLO arguments?
> >>>
> >>> Particularly, I don't want my mailserver to talk to hosts that introduce
> >>> themselfes as "localhost" or even my mailserver's hostname.
> >>
> >> Yes, that's possible in the ACLs, but ...
> >>
> >> > Exim version 3.36 debug level 1 uid=0 gid=0
> >>                ^^^^
> >> ... not with exim-3. Exim-4 has ACLs.

>
> So what is the exim4-solution?


untested but something like:

deny condition = ${if or{{match{$sender_helo_name}{\N^localhost$\N}} \
                         {match{$sender_helo_name}{$primary_hostname}}} \
                         {yes}{no}}
     log_message = SPAM: $sender_host_address sent sent bad HELO.
     message = This message looks like spam.


Will probably do what you describe above.

> Is there a tool which would migrate a exim3 config file into exim4
> syntax?


Included with the exim4 source convert4r4 which will generate an exim4
config. However because of the scope of the changes between exim 3 and exim
4 you should test it throughly before putting it into production. Or better
yet, use it as a base to rewrite your config from scratch (you'll probably
end up with something simpiler and easier to read if you rewrite it).

Tabor

--
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Tabor J. Wells                                     twells@???
Fsck It!                 Just another victim of the ambient morality