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Re: gethostby* users

Somebody in the thread at some point said:
> Nicolas Mailhot wrote:
>> Le dimanche 14 octobre 2007 à 13:05 -0500, Les Mikesell a écrit :
>>> As far as I know, none of the other MTA's are completely compatible
>>> with sendmail in the way (or whether) they expose details that the
>>> milter needs to know,
>> I won't pretend I know sendmail well enough to judge there…
>>> And the non-milter alternatives generally suffer from one or more of 
>> … but you certainly do not know non-sendmail stuff either.
> I used smail before it was abandoned; I've used qmail enough to hate it,
> tried postfix before it had anything resembling a milter, and always
> ended up going back to sendmail.  But, if anything else currently has
> the ability to manage customizable helper processes and multiplex jobs
> efficiently among them in a way that only requires mime and zip
> unpacking to be done onces even if you scan multiple times, I'd be happy
> to hear about it.

''Postfix before-queue Milter support


 Postfix version 2.3 introduces support for the Sendmail version 8
Milter (mail filter) protocol. This protocol is used by applications
that run outside the MTA to inspect SMTP events (CONNECT, DISCONNECT),
SMTP commands (HELO, MAIL FROM, etc.) as well as mail content. All this
happens before mail is queued.

 The reason for adding Milter support to Postfix is that there exists a
large collection of applications, not only to block unwanted mail, but
also to verify authenticity (examples: Domain keys identified mail,
SenderID+SPF and Domain keys) or to digitally sign mail (examples:
Domain keys identified mail, Domain keys). Having yet another
Postfix-specific version of all that software is a poor use of human and
system resources.

 Postfix version 2.4 implements all the requests of Sendmail version 8
Milter protocols up to version 4, including message body replacement
(body replacement is not available with Postfix version 2.3). See,
however, the workarounds and limitations sections at the end of this



I have been able to get Postfix to do what I want without too much of a
massive effort, whereas when I first tried to use Sendmail I though the
m4 config must be an April Fool's joke.  I guess if mail is a large part
of what you do, you can ride over that kind of quirk and become and
"sendmail expert" and get the job done.


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