action based on IMAP ID fields

[Aki Tuomi]

> On 21/10/2021 22:26 Jörg Backschues <joerg at backschues.de> wrote:
> 
>  
> Hello,
> 
> is it possible based on the information we get from the IMAP ID fields 
> sent by a client to start some actions e.g. reject an IMAP client with a 
> certain OS version?
> 
> -- 
> Kind Regards
> Jörg Backschues

Hi!

Dovecot auth policy feature allows you to inspect IMAP ID fields, if they are sent pre-login. You can use something like weakforced for this.

See https://doc.dovecot.org/configuration_manual/authentication/auth_policy/#authentication-auth-policy

Aki