also sprach Stephen Gran <sgran@debian.org> [2004.10.03.0407 +0200]: > I think that's oversimplifying a bit - if postfix can plug in > things like A/V scanners or content filters, then it's more than > "just an MTA" It provides interfaces to those. I does not handle any of the content scanning. In fact, while postfix provides rudimentary header and body filtering methods, and does add Delivered-To, the use of the filters is discouraged in favour of a proper content filter, and it never changes the payload of a message. It really just transports messages. > If it can write to the mail spool, whether that's in > /var/spool/mail or $HOME, than it is also certainly an MDA, just > a limited one. Yes, postfix ships with an MDA: local(8). However, it is not really part of the MTA and it is a separate module. > I have never personally seen the advantage of dissociating the MDA > from the MTA, myself. I tend to think it's a holdover from > sendmail's limitations, and people have gotten under the > impression that it's a strength rather than a weakness. How's this: most of my MTAs do not have MDA capabilities because they don't need them? > I mean, it can already filter early in the email processing (or > early enough to 5xx at smtp time, so I hear), and it can deliver, > so why can't it filter just before delivery? Doesn't seem like > a violation of the design philosophy, so much as an unimplemented > possibility of the design. local(8) just drops to a file or Maildir. As said, postfix allows you to use any other MDA which can then do as much as you want. > Getting OT into that 'My MTA is better hung' flamewar, though, I am not arguing this, and I don't care if you prefer another MTA. postfix is my baby, and I can't think of another project where I ever fully subscribed and supported *every single* decision made by the author. I think Wietse is a genius for providing superb code and for sticking so closely to the principles. -- Please do not CC me when replying to lists; I read them! .''`. martin f. krafft <madduck@debian.org> : :' : proud Debian developer, admin, and user `. `'` `- Debian - when you have better things to do than fixing a system Invalid/expired PGP subkeys? Use subkeys.pgp.net as keyserver!
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