[CentOS] Mail server setup for small ISP

[Gary Richardson]

It's been awhile since I looked into it, but I recommend outsourcing your
email.

Companies like fusemail (http://www.fusemail.com/solutions/resellers.html)
will give you accounts at $0.69/month/account for a 1GB account (last time I
checked anyway). They provide an API and a dashboard for managing it. They
also handle backups, I believe (read the fine print before you trust me). I
think there is spam filtering and anti-virus built in too.

On Jan 3, 2008 9:09 AM, Ugo Bellavance <ugob at lubik.ca> wrote:

> Hi,
>
>        I will probably have to design an e-mail (and other components)
> infrastructure for a small ISP soon (WISP).
>
>        I'm doing some research to determine which components would be best
> to
> offer e-mail services to their client and allow the staff to manage
> accounts easily.
>
>        I usually use virtual machines a lot for isolation and easy backups
> and
> migration (when a hardware node is underpowered, it is easy to migrate
> one or more virtual machines to another hardware node easily).
>
>        I have looked at iSCSI and drbd for high-availability of the
> storage:
> http://www.pcpro.co.uk/realworld/82284/san-on-the-cheap/page1.html.
>
> This looks like it should be doing a great job of high availability
> storage.
>
>        For mail server, I guess I should look at an MTA and IMAP/POP
> server
> that supports LDAP and/or MySQL for users.  Postfix should be a good
> choice for MTA, as I know it (at least a little, but I know sendmail
> better).  For IMAP/POP, I'm not sure...  Would dovecot be sufficient, or
> should I try cyrus.  I'd rather use components that are available for
> base or extras repository (or rpmforge).  I think that squirrelmail and
> horde would do a good job for webmail.
>
>        There shoudn't be any troubles having some redundancy for DNS, web
> servers, mtas, but what about IMAP/POP? linux-HA?  MySQL replication
> should be enough, I guess.  Or maybe linux-HA as well.  I wonder if I
> should add GFS to the mix to have multiple IMAP/POP servers use the same
> storage.  Or maybe IMAP proxies?
>
>        Any insights welcome :).
>
> Ugo
>
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