deliver vs LMTP for shared folders
ken at oceana.com
Fri May 13 10:00:17 EDT 2005
Scott Balmos wrote:
> Hi all,
> This is probably a bad subject line for the topic, but I can't think of
> a better one. I've always heard, between here and on the Postfix list,
> that delivering directly via LMTP to Cyrus is better than using the
> deliver wrapper program. I was curious how much of a performance hit
> there is by using deliver rather than LMTP directly? There's a method to
> my madness.
I can't give you any quantitative number, but its just an extra,
> Anyway... The main problem is that I have found no way to get Postfix to
> authenticate as an arbitary user over LMTP (e.g. to pull the username
> from the user+folder address). I can set the Postfix LMTP client to
> authenticate with SASL... But then Postfix requires a SASL password map,
> which is impossible because the user account passwords are not stored
> anywhere in cleartext.
Keep in mind that deliver is just a simple LMTP client, so anything that
it does, *should* be possible in any MTA. An admin can always proxy as
another user as long as you use a SASL mechanism which supports it
(PLAIN, DIGEST-MD5). But, in deliver's case its using the optional
AUTH=<authuser> keyword with the MAIL FROM command. At least one of
these methods should be supported by Postfix.
Kenneth Murchison Oceana Matrix Ltd.
Software Engineer 21 Princeton Place
716-662-8973 x26 Orchard Park, NY 14127
--PGP Public Key-- http://www.oceana.com/~ken/ksm.pgp
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