Jeff Peng via Postfix-users:
> On 2024-06-15 21:35, Wietse Venema via Postfix-users wrote:
>
> >
> > This is a bit off topic for Postfix, but a comnmon approach is to
> > shard a global database into regional ones and limit the impact of
> > outages. Some database systems support sharding out of
On 2024-06-15 21:35, Wietse Venema via Postfix-users wrote:
This is a bit off topic for Postfix, but a comnmon approach is to
shard a global database into regional ones and limit the impact of
outages. Some database systems support sharding out of the box (for
example, MongoDB, supported by
Joachim Lindenberg via Postfix-users:
> sql databases optimize for consistency instead of availability.
> And even if you design your data model not to rely on joins, to
> use unique ids per node, and to replicate both directions or
> disallow writes on the slave, at least MariaDB failed on
: Samstag, 15. Juni 2024 07:20
An: postfix user
Betreff: [pfx] Re: distributed email system
On 2024-06-15 12:46, Jean-François Bachelet via Postfix-users wrote:
> Hello folks :)
> isn't it what sql databases replication is good for ?
>
Replication becomes bad when network
On 2024-06-15 12:46, Jean-François Bachelet via Postfix-users wrote:
Hello folks :)
isn't it what sql databases replication is good for ?
Replication becomes bad when network partition. ;)
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Von: Wietse Venema via Postfix-users
Gesendet: Freitag, 14. Juni 2024 16:31
An: Postfix users
Betreff: [pfx] Re: distributed email system
Jeff Peng via Postfix-users:
Hello,
Is there any guide to setup a distributed email system? there should
be multiple MX, multiple IMAP/storage
On 2024-06-15 06:32, Wietse Venema via Postfix-users wrote:
There is a difference between IMAP/POP and SMTP. With IMAP/POP a
front end proxy needs to connect each user to the right message
store instance. With SMTP, different sessions can be handled by
different servers. The servers can figure
Jeff Peng via Postfix-users:
> On 2024-06-14 22:31, Wietse Venema via Postfix-users wrote:
> > Jeff Peng via Postfix-users:
> >> Hello,
> >>
> >> Is there any guide to setup a distributed email system? there should
> >> be
> >> multiple MX, multiple IMAP/storage servers, and sasl server cluster
On 2024-06-14 22:31, Wietse Venema via Postfix-users wrote:
Jeff Peng via Postfix-users:
Hello,
Is there any guide to setup a distributed email system? there should
be
multiple MX, multiple IMAP/storage servers, and sasl server cluster
etc.
That could be a job interview question.
The
And the really hard part is to ensure those databases remain consistent with
network failures.
Cheers,
Joachim
-Ursprüngliche Nachricht-
Von: Wietse Venema via Postfix-users
Gesendet: Freitag, 14. Juni 2024 16:31
An: Postfix users
Betreff: [pfx] Re: distributed email system
Jeff Peng
Regarding the HA cluster setup for email services, both Cyrus IMAPd and
Dovecot support master-slave replication.
If you're setting up a cluster in HA, you'll need to store your emails
in an object storage. Dovecot Pro includes this feature. Cyrus IMAPd has
some support for object storage
Jeff Peng via Postfix-users:
> Hello,
>
> Is there any guide to setup a distributed email system? there should be
> multiple MX, multiple IMAP/storage servers, and sasl server cluster etc.
That could be a job interview question.
The easier part is setting up a pool of dataless Postfix SMTP
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