New server setup, best practice?

[Remco Barendse]

Thanks Alex!  How/where do you move the mail older than a couple of days ?

What would be the best distro to use, CentOS 6 or 7 ?  I read earlier that 
CentOS 7 broke quite a number of conventions but support wise 7 seem
wise ?

On Wed, 10 Aug 2016, Alex Neuman van der Hans wrote:

> Again, depends so much on the specific circumstance… I just set up a $5/month VPS with it, with 15GB total space, storing only the past couple of days’ worth of e-mail for a handful of users.
> I’ve also set up systems for thousands of users, with a terabyte of SSD storage for “local, recent” stuff plus mbox-purge processes exporting stuff to a couple of dozen terabytes of local HDD storage and monthly processes moving
> stuff elsewhere using NFS and/or rsync.
> 
> I’d rather mount NFS than SMB for performance/permissions reasons.
> 
> [alexneuman.format_png.resize_120x.png#logo]    
> Alex Neuman van der Hans Producer/Host, Vida Digital
> +1 (440) 253-9789 | +507 6781-9505 | Panama |alex at vidadigital.com.pa | http://vidadigital.com.pa/ |Skype: alexneuman 
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> 
>
>       On Aug 10, 2016, at 2:06 PM, Remco Barendse <mailscanner at barendse.to> wrote:
> 
> Thanks Alex!
> 
> The choice for CPU/MEM/storage is easy when it's a virtual machine, can move around as needed. Was curious what the recommended disk size is for a MailScanner machine and what people do with archive copies of mail/spam. Mount
> an NFS or SMB share to store that or something else?
> 
> Thanks :)
> 
> On Tue, 2 Aug 2016, Alex Neuman van der Hans wrote:
>
>       It really depends on context. Space, CPU and I/O issues can vary greatly from site to site.
>       If you want to upgrade, look into your biggest bottlenecks first. Sometimes it’s RAM, sometimes it’s disk I/O (where SSD’s would be great), sometimes it’s CPU
>       power.
>       In my case I usually go for SSD’s for storing the OS, programs, and mail - and regular hard drives for things like quarantines and such, with scripts moving older
>       stuff with various protocols (NFS, rsync, FTP) over to long-term storage to make space when needed.
>       Oh, and it’s not “virii”. Virus is a “mass noun”, like “rice”.  https://en.wikipedia.org/wiki/Plural_form_of_words_ending_in_-us#Virus
>       [alexneuman.format_png.resize_120x.png#logo]    
>       Alex Neuman van der Hans Producer/Host, Vida Digital
>       +1 (440) 253-9789 | +507 6781-9505 | Panama |alex at vidadigital.com.pa | http://vidadigital.com.pa/ |Skype: alexneuman 
>       [facebook.png]  [linkedin.png]  [twitter.png]  [pinterest.png]  [youtube.png]  [instagram.png]  [wordpress.png]  [amazon.png]  [XT9yavvmRJaZZvINZFTQ_skype.png]
>        [wEM3vsigQhq5yev6iwEV_whatsapp.png]
>
>            On Aug 2, 2016, at 5:46 AM, Remco Barendse <mailscanner at barendse.to> wrote:
>       Hi list!
>       I would like to upgrade the servers that are running MailScanner.
>       What is the best approach on storage? It will be virtual machines (which i guess is what a lot of people are doing now), how to approach the storage issue,
>       what would be the best approach / design? What size for the MailScanner root partition etc. ?
>       I have to keep verbatim copies of anything that goes in or out of the mail servers, i keep the qf/df pairs from sendmail.
>       I read some people seeing their quarantine getting filled with 7 Gb of virii just in one day, what would be recommended storage sizes and how to deal with
>       quarantine / archive folders? If it wise or recommended to mount an external volume at /var/spool/MailScanner/quarantine and
>       /var/spool/MailScanner/archived or is  there a better way ?
>       If I have several MailScanner servers, is it OK to keep all spam/archived copies in one and the same mount ?
>       Will CentOS 7 work flawlessly? Anyone using standard cloud images?
>       Thanks for any tips / suggestions :>)
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