Re: [exim] setup Exim to improve SMTP performance

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Autor: Jeff Garzik
Datum:  
To: Olivier Bonvalet
CC: exim-users
Betreff: Re: [exim] setup Exim to improve SMTP performance
Olivier Bonvalet wrote:
>> Other possible ways are:
>> - a hardware RNG, either in the chipset (supported by the kernel) or
>> from a cheap microphone (kernel patch available)
>> - Entropy Gathering Daemon (EGD) or similar user space tools, must be
>> supported by your software (patched openssl?)


> No, in my case I really don't think it is a solution. It is rented
> dedicated servers, so I can't add
> hardware, and don't want have to compile anything (except the kernel).


Look into EGD, like the poster recommended. All my rented dedicated
servers have unused audio devices on them. Google for "audio entropy
daemon" for software that will collect entropy for you, from an open mic
circuit or similar "noise" sources.

Similarly, you could potentially get entropy from an unused TV/video
port on a video card.

You can even collect entropy from one machine, hopefully with a hardware
RNG of some sort, and send it to another machine.

    Jeff