3. こまったベンダー
I wish vendors would stop shipping obsolete
software. Postfix 2.1 is almost finished, and
they still ship Postfix 1.1.
Any particular distribution, like RedHat or
something that I may have on a ready-to-
install CD? I would not spend a day
downloading bits and pieces.
If a reboot fixes a problem then it is not a
Postfix problem, but rather a broken
operating system.
4. SPAM対策はやりすぎるな
Spammers do not destroy the infrastructure. It's good-willing
folks who destroy it with lame countermeasures.
Sorry, good-willing folks with lame counter-measures are
destroying the infrastructure faster. Postfix must be kept free
from such crud.
Don't ask me to have the Postfix create multiple queue files per
input transaction, one per recipient class. It's either not robust
or it' incredibly expensive.
5. 計測しようよ
Your best option is to measure the
performance (for example, with the smtp-
source and smtp-sink utilities that ship with
Postfix).
With 130.000 queue files, one level of
hashing is probably sufficient. The exact
number depends on your hardware and on
your file system implementation.
Too many levels will actually slow Postfix
down.
6. 限界を知りましょう
On a faster LAN, sending a 1-bit query takes
as long as sending a 1000 bit query.
Faster LANs don't make bits go faster. They
make bits travel more closely together, so
that more bits arrive per unit time.
Still, the bits don't go faster than the speed of
light.
7. 打つ前に考えましょう
Next time, please engage the brain
before hitting the keyboard.