New feature - hostname lookups in rulesets

Alex Neuman alex at
Tue Jun 2 18:16:44 IST 2009

Whitelisting from will result in whitelisting any e-mails
that *say* they're from whatevertheywant at, even though their
reverse DNS might be,
whereas the new option would allow joe at to e-mail you through
his blackberry - and you'd receive the e-mail from joe at via and it would "hit" that rule
since it comes from a *host* whose reverse dns ends with - or
at least that's what I think it does.

On Tue, Jun 2, 2009 at 11:59 AM, Mike M <mrm at> wrote:

> Julian Field wrote:
>> Hash: SHA1
>> On 31/05/2009 20:41, Alex Neuman wrote:
>>> Wow! This means we can whitelist (gasp!) * <
>>>> and things like that!
>> You'll just need to do
>>     From: yes
>> which will do the job.
>>> I suggest you add to the description on the comments on the
>>> MailScanner.conf file that it's imperative - for performance reasons,
>>> besides the fact that it's A Good Idea (tm), that people run their own local
>>> caching nameserver.
>> True enough, I should do that.
> Please forgive my ignorance on this, because I'm sure there's something
> really simple that I'm missing, but how is this any different then
> whitelisting with a line such as:
> from: yes
> which I have been doing for many years in my spam.whitelist.rules file?
> There's got to be something I'm not getting about this new feature.
> Mike
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Alex Neuman van der Hans
Reliant Technologies
+507 6781-9505
+507 202-1525
alex at
Skype: alexneuman
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