[CentOS] how to calculate mail storage/traffic used

[Ned Slider]

On 07/11/13 13:21, Götz Reinicke - IT Koordinator wrote:
> Hi,
>
> we have to setup a server which gets a copy of all messages send and
> received by our mailserver as a 1:1 copy. Mails send to multiple
> recipients should be calculated and saved per user. (great if you
> usually have lost of mails send to groups of people.)
>
> So no dedublication should be used here. (e.g. save the message and
> refer the different recipients to it.)
>
> How can I calculate the current traffic in the best way to extrapolate
> the amount of space to be planed for the new server?
>
> We think to have a couples of days to be saved.
>
> 	Thanks for any hint or comment. Regards Götz
>
>

You don't say what MTA you are using. If it's Postfix (the default in 
RHEL6), pflogsumm can provide such information from your logs.