> On 01/21/2022 10:38 AM Martin Olsen <martin.olsen....@gmail.com> wrote: > > As stated on documentation S3-compatible Storages — Dovecot documentation > https://doc.dovecot.org/configuration_manual/mail_location/obox/s3/ only AWS > S3 is officially supported. > > However, we know that Scality has been successfully integrated at some larger > corporations. > This is correct, Scality is a partner of Open-Xchange for OX Dovecot Pro installations, and is a supportable storage solution.
> Particularly curious if anyone has integrated with Pure S3 object storage > solution, or any other for that matter? > This support is provided through Scality's sproxyd interface, not S3. See https://doc.dovecot.org/admin_manual/obox/scality_key_format/ https://doc.dovecot.org/admin_manual/obox/scality_key_format/. sproxyd allows us to provide a fully geo-redundant solution that can support Dovecot and the mail storage in multiple active data centers. S3 support is limited to a single data center/region due to limitations of the S3 protocol. For OX Dovecot Pro, we only support "AWS S3" for SLA purposes. This is for several reasons: * There is no "official" S3 spec. Thus, you have to certify against specific vendors - it is not possible to certify generally against the protocol. Be very wary of a provider that claims they are "fully AWS S3" compliant - what does that mean if there is no formalized spec? * Experience has shown us that many S3 installations cannot handle the mail loads in larger Dovecot installations. After they reach specific loads, they can enter a death spiral and/or become unresponsive. * It is impossible to support a customer that just installs S3 software themselves and creates their own storage array. This is a custom/bespoke project. The purpose of the OX Dovecot Pro product is to provide a full email system out of the box without the need for custom development. michael
