[Mimedefang] Adding filter_helo support

[Philip Prindeville]

David F. Skoll wrote:

>But it breaks existing filters; we need the helo arg back.
>And there's a good reason to pass HELO in filter_sender (and
>filter_recipient, for that matter): You may WANT to defer your
>HELO processing until later.  Our commercial products, for
>example, let individual recipients decide if they want to use
>various rules, which means we need to defer all processing
>until at least RCPT.
>  
>

That's got to get hairy when you have multiple recipients specified.

Too bad there's not a simpler way to do that without duplicating code
and arguments...


>>In any case, the variable continues to be present in $Helo.
>>    
>>
>
>Not in filter_sender if we use your patch, unless we parse the
>commands file manually.
>
>If you re-work your patch to leave filter_sender as it was, I will
>include it in the official release.
>
>  
>

Right, saw that.  For some reason, all my postings are being delayed by 15
minutes or more...

-Philip