RE: Email cluster
Hello,
I think splitting functionality is the way to go and think of services
instead of servers
For the incoming SMTP service you could use MX records with the same value
to round robin between the servers. Those incoming also do the filter/spam
service.
Then you have the POP/MAP service. I think it is preferable not to use NFS
but go for a NAS or SAN. The other option is to give users a dedicated
server and limit the number of users on a server.
Outgoing SMTP is the other service. Also filter/spam on this machine would
be very handy
Regards,
Brian
> We use something like this in our network:
>
> - The MX has: AV+Spam filters; and relays all mails to the primary server.
>
> - The primary server has: pop and imap. Is the mail store and all mails
> from
> our users goes out troughs this machine (this is our smtp.mydomain.com and
> pop.mydomain.com)
>
>
> But what happen when one machine can't manage the entire load, but steal
> needs to work with only one domain (ej: mydomain.com)? In this situation
> some kind of load balance is needed but I have no idea how to implement
> it.
>
> Thanks.
>
> -----Mensaje original-----
> De: Steve Redlich [mailto:steve@redlicheng.com]
> Enviado el: Jueves, 17 de Noviembre de 2005 04:05 p.m.
> Para: Pablo
> CC: debian-isp@lists.debian.org
> Asunto: Re: Email cluster
>
> On Thu, 17 Nov 2005, Pablo wrote:
>
>> Hello, I have a question, how can I build a postfix email cluster with 3
> or
>> more machines?
>>
>> How to manage the storage of de virtual mail accounts? Should it be an
>> nfs
>> FS? I have no idea!!!!
>
> Why not split the functionality among the three machines.
>
> machine 1
> smtp (receive mail from network)
> dns blacklist
> greylist
> spf
>
> machine 2
> clamav
> spamassassin
> webmail
>
> machine 3
> mailstore
> pop/imap
> ldap/mysql account information
>
>
> Rearrange to fit your needs and load
>
> Steve
>
>
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