I have been lurking on this list for a while.
Osmosis!
I <think> I am learning. I certainly know things <not> to ask. ^|~
Some things seem to be somewhat philosophical however and I do not know all the
history.
Perhaps the long-time residents may care to expound. Hopefully other lurkers are
taking notes.
Q1:
I have learnt that qmail does not issue reply codes indicating permanent failure for
invalid users/mailboxes.
I know that these messages will eventually bounce but (apart from the issue of
determining whether a recipient
exists within a valid domain for delivery) is this "less expensive" than the more
obvious 5xx response?
On the face of it I see that a qmail server receiving lots of spurious mail for a
valid domain will be doing
lots lots of work getting rid of messages it could have refused.
Is there a non-obvious upside to the qmail way of doing this?
Q2:
Perhaps I have a user who makes a typo in an address. Say it is in the local-part and
that the domain is
valid.
I have learnt tha qmail does not issue deferral notices. On the server I have worked
with in the past a
deferral after a few hours <may> result in the sender correcting the address. (Some
are so stupid that a 4x4
hardwood billet.... but never mind!) Waiting days doesn't seem like other than a
godlike retribution process
for fallible beings.
Comments?
In the beginning was The Word
and The Word was Content-type: text/plain
The Word of Rod.
