Hi All,
Thank you to all for all the replies
I also found that Qmail is definitely better than sendmail.
After reading lot of documentation links given here and elsewhere
I also found that sending mails concurrently is better than sending
mails from one connection.
I have checked the mailing lists and archives on the same too.
Cheers
Rajesh.
----- Original Message -----
From: "John White" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, July 10, 2001 9:44 AM
Subject: Re: Mailing from One connection
> On Mon, Jul 09, 2001 at 12:30:52PM -0600, Roger Walker wrote:
> > 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.
>
> Amazing! I guess you're right. What is this MTA called?
> Where can I download it? Let me know, and I'll set it up on a
> test box to try to duplicate your test. What were the IP addresses
> of the two boxes you did this on? What kind of dns library does
> this server use for it's resolution? And what was the name again?
> What server did it use for the resolution, and what was the dns latency
> for that from the sending boxes? I'm going to try to duplicate your
> test as closely as possible. What was the ip of that dns server again?
>
> Wait, I'm reading your post a bit more closely and it doesn't look
> like you benchmarked qmail against your server, but against "a
> script to generate 10K rcpt to: lines". Is that right? Now I'm
> a bit confused. qmail is an MTA which handles many things like
> a safe queue. What are you comparing that to? The case where I
> have 10K recipients of one message at one domain which never needs
> queue management? How does your script handle new messages? How
> does your script handle a randomly mixed list of 10K recipients who
> are located at 10 different domains? How does your script handle a
> list of 50M recipients at one domain? Does your script accept message
> via the smtp protocol? If so, what happens after it replys ok to
> the 50M message case, and you power off the box 5 seconds later?
> Can you send me the source of this script?
>
> John
>
