Mailbox & Server Down

[Nicholas Taylor]

On 03/06/2020 11:06, Andrea Miconi wrote:
> My mailboxes are on a Dovecot (IMAP) server.
> On DNS there is an MX record pointing to the server.
> To read the mail I use Roundcube.
> If the server is down, I lose the new mail.
> 
> I would like to do two things, alternatively.
> 
> First option.
> 1) I keeep the mail on the provider's server, restoring the original MX 
> record.
> 2) Dovecot does not receive the mail, but should go to download it.
> 3) I can access the server with Roundcube to read the downloaded mail, 
> but if the server is down I can always go to read the mail on the 
> provider's server with its webmail

This is pretty much exactly what I do.  I use fetchmail [1] to download 
mail from my ISP and feed it to exim, which delivers everything to 
dovecot.  I don't know whether it's possible to configure dovecot alone 
for this.

[1] It's horrible, but it worked in 2007 and I'm intensely lazy.

Nick