RE: [SLE] POP Mail HOWTO?



Anders Johansson [mailto:andjoh@xxxxxxxxxx] said:

fetchmail has one config file per instance you run. There are
basically two
ways of doing it. Either each user sets up fetchmail for his/her own
accounts, and runs a private fetchmail, or the admin of the
machine sets up
one central config which fetches all email for all user
accounts. It's down
to taste and what suits your exact setup really. Both ways work

If I wanted to use fetchmailconf and use the central config
option, do I open a console and do sux - fetchmailconf ?

Similar questions about IMAP. And where should the mail
be going for the IMAP server to handle it, if _some_
of the users are local login users, but some are
remote-only and don't have a login account on the
serving PC?

I suspect that rules out Joanne's solution then, since I
don't think that can
handle virtual users (at least I don't think so).

cyrus can though, but in the solution I gave in my other
email, it would
require that you create accounts for them, but you can
disable logins (set
login shell to /bin/false) if you want.

There are ways of creating purely virtual users without linux
accounts too, if you really want them

I guess it's easy enough to just have "dummy" system
accounts with login disabled (or just a really nasty
password), while I'm dealing with less than half a
dozen mail users.

Is it much more complicated to do the virtual mail
user thing and disengage entirely from local system
accounts? Isn't that mostly why sasl is invoked?

Does IMAP need/expect that all the incoming mail will
be in one place, or can it handle (say) /data/Maildir
for the non-local subscribers as well as individual
~/Maildir for those who have local login accounts?
What about that question makes it stupid? :-)

It's not a stupid question. IMAP the protocol doesn't care
where the mail is
physically stored, but I don't think I've ever seen an actual
IMAP server
that could handle multiple locations (cyrus murder, I guess,
in some sense)

Uh-uh. I am _so_ far from needing a murder of Cypruses...

So, is there just _one_ setting in imap.conf that says
where it expects/keeps the mail?
And I just match that path somewhere in the Postfix
main.cf, and everything is sweetness and light?

I mentioned Courier because that's what was used in
the HowTos to which I originally pointed John Alegre.
No other attraction to it.
My first-ever attempt at a server was with Cyrus, but
I tripped over stuff to do with authentication and
might also have had a generic IMAP trying to run at
the same time, or maybe Cyrus does like Postfix does
(when it pretends to be sendmail), and presents an executable
just called "imap" or "imapd"... does it? After I
finished installing SUSE 10.1 and blundering through
the (attempted) mail setup, Xinetd seemed to think
there was something called imapd, and nothing called
Cyrus-IMAP... though I think there was a Cyrus-sasl
daemon (listed in xinetd) that wasn't active... so easily
do I confuse.

Neither cyrus imap nor saslauthd are run through xinetd,
they are standalone daemons

How does one know this, from lookin' at them?
Is it just because they don't appear magically in xinetd?
Or is there something intrinsic to the apps that tells
you? ... or it says so in the man page? and you know
to look for that because...?

I didn't say anything about outbound, in your scenario I
don't see a reason
why the email client should't connect directly to the
external mail server.
But if you want it to go through the postfix server for some
reason (security
perhaps), then it's not so hard

Here's another place where I confuse.
All mention of Postfix, to this point, was between
fetchmail and IMAP on the inbound path, which leads
me to believe that that's what has been configured
in main.cf, to now.

So, what tells Postfix that outbound mail is:
a) outbound
b) treated differently than what it gets inbound from fetchmail?

Hmm. When I send directly from mail client (KMail) to
ISP, it goes via the ISP's SMTP server.
Does Postfix, then, run an SMTP server to catch outbound
mail either from client on the same box or from another box
on my LAN? Is it receiving via a port in both directions,
or just for the outbound stuff?

Have a look at the description I gave in my other email and
let me know if it matches your requirements.

Will do, thanks, but in this mail it's the understanding
of what's happening and needs to happen that I'm working on.

Kevin

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