unix:lmtp vs /usr/cyrus/bin/deliver ?

[Thomas Hannan]

On Monday 20 January 2003 19:52, Kendrick Vargas wrote:

Thanks for the clarification. i have to admit that I'd never worked with LMTP 
before I undertook this project... 

Anyways, with the AMaViS virus filtering, could you clarify a bit? Does your 
MX point to an AMaViS server which then forwards to your Postfix/Cyrus box?
(MX) --> [AMaViS-smtp1] --> [Postfix-smtp2] ?
Or is it something different? For some reason I thought that most filtering 
solutions worked between the SMTP process and the message store (as in a 
/bin/deliver replacement). (Oh, and I'm assuming that hosting multiple 
domains doesn't complicate this?)

If you wouldn't mind sharing a config file I'd appreciate it ...

Thanks,
Thomas

> The deliver method is gonna be more costly in terms of resources than
> lmtp. Every time postfix is going to deliver the mail, it has to spawn a
> shell which loads the binary every time, chews up memory, etc, just to
> deliver mail. With lmtp, cyrus is allready spawning and listening on a
> socket and all postfix has to do is open and write to the socket. Not to
> mention that you'll have permissions and security issues with the deliver
> method over the lmtp method.
>
> If you're worried about filter flexibility, don't. Postfix is very
> flexible in this sense. I use AMaViS with my server (several domains) and
> I have it running as a local only smtp daemon, and I essentially redirect
> email through it to provide the filtering. It's alot safer this way. I
> have spam filtering defined as a postfix content filter but I could do it
> as a smtp redirect as well.
> 			-peace