Postfix question - further

[Mike McCarthy, W1NR]

Anne,
   These look like normal log messages for postfix.  The first shows the
message being delivered to the mailbox.  The rest is the log of the mail
session.  One shows the connected client.  Another is cleanup and the last
is qmgr purging the mail message from it's buffer as it was delivered
successfully.  If there were errors, the messages would be quite different.
Errors with words like "reject" and "denied" are what to look out for.

Mike

 E477968466: to=<anne at lydgate.lan>, orig_to=<anne>,
relay=borg.lydgate.lan[192.168.0.30]:25, delay=3.1,
delays=2.8/0.03/0.18/0.04, dsn=2.0.0, status=sent (250 Ok: queued as
28E00DEF2A)

Following this through in maillog:

Nov  7 21:45:05 borg postfix/smtpd[25995]: 28E00DEF2A: 
client=david.lydgate.lan[192.168.0.70]
Nov  7 21:45:05 borg postfix/cleanup[25998]: 28E00DEF2A: 
message-id=<20061107214504.E477968466 at d
Nov  7 21:45:05 borg postfix/qmgr[2279]: 28E00DEF2A:
from=<anne at lydgate.lan>, size=943, nrcpt=1 Nov  7 21:45:05 borg
postfix/smtpd[25995]: disconnect from david.lydgate.lan[192.168.0.70] Nov  7
21:45:05 borg postfix/local[25999]: 28E00DEF2A: to=<anne at lydgate.lan>,
relay=local, delay Nov  7 21:45:05 borg postfix/qmgr[2279]: 28E00DEF2A:
removed

Can someone tell me exactly what is happening here?  As far as I can see I
am not losing any messages, but....

Anne