There is no easy way to do this, I guess if you have way to return

delay_until=<unix_timestamp+1> from your passdb, you can limit the speed a bit.

E.g. delay_until=1723723664

Aki

> On 15/08/2024 15:02 EEST Corey H via dovecot <dovecot@dovecot.org> wrote:
> 
>  
> Hello
> 
> one of our users makes too quick IMAP connections to the server.
> 
> $ sudo tail -10000 /var/log/mail.log|grep **@**mail.com|wc -l
> 3544
> 
> logs like this:
> 
> Aug 15 19:54:10 mx dovecot: imap-login: Login: user=<**@**mail.com>, 
> method=PLAIN, rip=**, lip=**, mpid=4151830, TLS, 
> session=<UPotgLcfTOjYUzTN>
> 
> How can I implement a Frequency Control on client connections to slow 
> down his requests?
> 
> Thank you.
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