On Sat, Jun 22, 2024 at 07:01:00AM +0800, Jeff Pang via mailop wrote:
> do you know if there is a reverse proxy for submission?
None should be necessary.
> For instance, my server is in the US, while some customers are in EU,
> so I consider to deploy a reverse proxy in EU for speeding up their
> access.
A reverse proxy could just as easily slow things down. Submission isn't
a content service that can be sped up via a CDN, if you don't replicate
the authentication and access control service, let the users connect to
the source of truth. Authentication/authorisation aside, submission
servers can operate independently, with no shared state.
In any case, modern MUAs deliver mail in the background, and TCP handles
high delay networks just fine, so most users don't feel any impact from
high RTTs to the submission service. It is your IMAP store and
especially any webmail servers that you might consider
replicating/colocating closer to your users.
--
Viktor.
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