On Samstag, 26. Januar 2008 Paul J Stevens wrote:
> with 100/s, what is your testing setup?

Ups, that should have been 100/minute... 
The other value is correct, anyway: 1000/second would be needed.

The project would be for up to 20 mio. e-mails/24h on a bad day. But 
only the spam should walk into dbmail, which is about 50-90% of that 
traffic. As it is with spam, it comes in waves, so my estimation was 
for 1.000 spams/second peak rate.

James Greig said they manage 2mio/24h, with a single Dell machine - the 
disk array info would be very interesting, and how the DB machine is 
loaded (load avg).

64 queries per inserted e-mail is indeed very hard. I can imagine using 
a reduced dbmail installation, without all the header cache information 
like dbmail_tofield, *fromfield, *replytofield etc., as only a webapp 
has access, which in turn is only there for a user to
1) login (AUTH from outside dbmail)
2) get a list of spams in box
3) should there be a HAM he wants he clicks on it and says "deliver this 
to me"
4) a big "delete all" button
so it's really a very specialised form of dbmail. Paul, would that 
be "easily" possible, without having to patch around with every update 
of dbmail?
With the reduced amount of tables, lots of queries, inserts and indizes 
should be saved, improving throughput a lot. Sounds like fun.

I can imagine this could be a good reference for dbmail, and I also 
imagine there is some cash donation possible. For the moment, all this 
is "maybe", as I don't have the project confirmed, but I already look 
into several directions for "how to solve this". My other idea would be 
a cyrus mail server.

mfg zmi
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