identify 143 vs 993 clients

[Aki Tuomi]

> On 25/05/2020 21:48 mj <lists at merit.unu.edu> wrote:
> 
>  
> Hi,
> 
> I am trying to find a nice way to identify dovecot clients that are 
> still configured to use port 143 to connect to our mailserver, from the 
> dovecot logs.
> I would then ask them to move over to 993, and finally disable port 143 
> altogether.
> 
> When looking at the dovecot logs, it seems this is not logged in any 
> obvious way.
> 
> Of course I could use netflow etc, but that would not give us usernames, 
> but IP's, etc.
> 
> So, is there a nice way to somehow indicate in the dovecot logs, if a 
> client connected on 143 or on 993?
> 
> Thanks!

You could use

https://doc.dovecot.org/settings/core/#login-log-format-elements

to log this.

Aki