Rich Pieri <email@example.com> wrote:
>Dave Sill writes:
>>> the AOL MX needs 20 instances of its MTA to handle this traffic.
>> Only because AOL uses a monlithic MTA (sendmail).
>Irrelevant. If AOL were using qmail it would have to fork 20 copies of the
>MTA in order to deal with the 20 incoming messages.
Nope. If AOL were using qmail it would have to fork 20 copies of
qmail-smtp, which is just one small piece of qmail.
>Regardless of the
>recipient's MTA, qmail requires 20 times the instantaneous resources on the
>recipient's system as any other MTA.
Right, but with qmail or other modular MTA, each of those 20 chunks
is substantially smaller than the sendmail or other monolithic MTA's
equivalent. Under IRIX, for example:
$ size -4 /var/qmail/bin/qmail-smtpd
36864 + 4096 + 6268 = 47228
$ size -4 /usr/lib/sendmail
458752 + 69632 + 57708 = 586092