From: mouss (usebsdfree.fr)
Date: Sat Jun 10 2006 - 06:53:04 CDT

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Erwan David wrote:
> Le Sat 10/06/2006, mouss disait
>
>> Erwan David wrote:
>>
>>> Very effective is a restriction on helo <your ip address> or helo <your
>>> domain>, the latter being more dangerous to filter since some clients use
>>> the
>>> right part of the sender address for helo.
>>>
>>>
>>>
>> just reject them. I know of no real MTA that does so. nor of any current
>> MUA. Old mozilla|TB used to do so (They since fixed it, though not the
>> right way). A "sane" MUA must allow the user to define the helo arg
>> instead of trying to guess it (the sender domain thing was because they
>> couldn't get the domain name of the machine, mostly on win* platforms).
>>
>
> Your mileage may vary. I reject them, but some mail admins don not have a
> complete control on the MUA of their users. They need to be aware of the
> potential problem
>
>

If the client is in mynetworks or is authenticated, I don't care of its
helo. If not, they should use an MTA.

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