2FA and IMAP

[Adam Tauno Williams]

On Sun, 2019-04-21 at 23:09 +0200, Marcus Schopen wrote:
> Hi,
> 
> a friend wants to restrict access to his mailbox with 2FA. As
> webmailer I use Roundcube, which offers a 2FA plugin. But in the end
> this is pointless, because besides the webmailer there is also the
> native IMAP access available. Is it therefore possible to restrict
> the access to a single IMAP account to a certain IP so that this
> mailbox can only be accessed via the Roundcube?

I doubt it, but maybe.  

All the authentication stuff is handled by SASL - not really Cyrus -
and SASL is deeply configurable.

https://www.cyrusimap.org/sasl/

-- 
Adam Tauno Williams, awilliam at whitemice.org
Multi-Modal Activists Against Auto Dependent Development
resisting the unAmerican socialists of the Motorist hegemony
http://www.mmaaadd.org