central amavis machine for in and outbound

[Tobias Hachmer]

Am 17.11.2011 20:58, schrieb Patrick Ben Koetter:
>> >30.000 msg overall, including spam, or filtered messages?
>>
>> Yes, overall. Got this values from mailgraph...
>
> 2 servers for in- and 2 for outbound mail is FAR too much!

Yeah, I thought of differentiate an in- and outbound server for 
troubleshooting purpose.
My outbound traffic is really low, so I thought here of a virtual 
machine for the outbound machine, if a central amavisd makes sense.

> Look at this breakdown:
>
> 30.000÷30 = 1.000 msg/day
> 1.000÷24  = 41,666666667 msg/hour
> 42÷60     = 0,7 msg/minute
> 0,7÷60    = 0,011666667 msg/sec
>
> Ordinary hardware (!) with cheap HDs can do about 20 msg/sec without 
> any
> problem. If you go and buy a good RAID controller incl. a BBU and add
> reasonably fast harddiscs you can easily take this up to 60 msg/sec. 
> Better
> hardware gives you 100 msg/sec and more.
>
> Ordinary hardware:
> 20×60        = 1.200 msg/min
> 1.200×60     = 72.000 msg/hour
> 72.000×24    = 1.728.000 msg/day
> 1.728.000×30 = 51.840.000 msg/month
>
> That's 1.728 times much more performance than you need right now.

Wow, much thanks for your calculation that's really gave me a reality 
check!
Honestly, I'm very happy getting here such qualitative answers, even 
for a little like me.


> I doubt that 0,011666667 msg/sec impose a problem for a shared 
> database.

That sounds good.

Well, now I'm going to plan with decentralized amavisd-new setup on 2 
machines for in- and outbound.

Thank you!

Best regards,

Tobias