I beg to differ...
I have a list of 40k I'll use to race ya.. Hell I'll even let you use a list
of 10k to race my list of 40k.. Me using qmail and you using Sendmail.. I'll
even go beyond that I'll limit the bandwidth my server can consume to
1600kb/s and you can use whatever you want.. I'll still win...... Speed is
not the key here. The key is in how mail is handled. Sendmail opens up a
single connection and dumps all similiar address for that domain into that
connection one obvious slow down is in response time waiting for the server
to acknoledge the User address, accept the message and then reset. Whereas
qmail just cranks out each message in it's own instance and does not have to
deal with all those extra commands and can open as many as (in my case) 400
connections to a single remote server at one shoot, limiting my bandwidth to
1600k I can still crank out something like 1400 messages a minute sustained
using qmail.. Can Sendmail do the same?? I think not.
--JT
----- Original Message -----
From: "Roger Walker" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, July 09, 2001 11:30 AM
Subject: Re: Mailing from One connection
>"Rodney Broom" <[EMAIL PROTECTED]> writes:
>
>This has been hashed, rehashed, and re-re-hashed on this list. It
>inevitably ends in a flameware, somebody telling somebody else to
>profile rather then speculate, and a series of past analyses of these
>events supporting both sides of the argument being dredged up.
Test with stock qmail on a Solaris workstation, 10,000 copies sent
to the same email address (obviously the same domain) using qmail-inject:
30 minutes.
Test from same workstation with a script to generate 10,000
"rcpt to:" lines and send via a single connection: 5 minutes.
In the first example, 10,000 actual copies were delivered to the
mailbox but in the second, only a single copy was delivered.
Presuming it should take the same amount of time to wait for a
"rcpt to:" response whether sending a separate message at a time or a
single message with multiple "rcpt to:" lines, I get the results that I
expected - to send to the same domain (ignoring VERP requirements), it is
faster to use a single connection for multiple messages than to use qmail.
--
Roger Walker
Tier III Messaging/News Team
Internet Applications, National Consumer IP
TELUS Corporation 780-493-2471
