On 2009-04-06, at 0836, Mohsen Pahlevanzadeh wrote:
You & every mail-man saw Big Picture of qmail. I assumed qmail is black box.I want to extend big picture, i use qmail admin ,Devocot & vpopmail.I draw a few relation.Can you tell me whether i draw correct?Also i needto if i didn't draw relation tell me that i will draw that.
the way i've always thought about it, is that there are three "phases", and it's easier to think of each "phase" as a separate set of operations.
(1) message being sent INTO the queue, whether they originate from another process on the local machine, or from some other server (via qmail-smtpd or something similiar.)
(2) message being moved OUT OF the queue, either going into a local mailbox, or being forwarded to some other server.
(3) for messages in the mailbox, access to those mailboxes via POP3 or IMAP, or webmail (which usually, but not always, involves IMAP.)
i find it's easier to think of each "phase" of the process separately.i made some diagrams a few years ago, which document the first two parts of the process.
http://qmail.jms1.net/qmail-1-incoming.pdf http://qmail.jms1.net/qmail-2-delivery.pdfi've been meaning to re-do them as a single multi-page PDF file, and include a third page about how dovecot, squirrelmail, and other "mailbox access" programs fit into the picture. your message is the kick i needed, i'm working on that as we speak... the first two pages will be pretty much identical to what's on the web site now, and the third page will cover how dovecot, squirrelmail, desktop MUAs, and other "user accessing the contents of a mailbox" programs fit into the picture.
as for your diagram...(1) maybe i'm missing something, but it doesn't make any sense to me at all. maybe you and i are thinking on different levels, or looking at things from different angles.
(2) i'm surprised djb's list actually allowed it through to begin with (which is why i'm including the URLs for my own PDF files, rather than attaching them.)
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