debug SMTP commands sent/received to/from the submission service

[Aki Tuomi]

> On 09/04/2021 10:13 Victor Sudakov <vas at sibptus.ru> wrote:
> 
>  
> Dear Colleagues,
> 
> I'm trying to debug SMTP commands clients send to the submission
> service. 
> 
> I've tried 
> 
> protocol submission {
>   rawlog_dir = /var/tmp/dovecot
> }
> 
> but /var/tmp/dovecot remains empty. What am I missing? I'd use Wireshark
> but the communication between SMTP clients and Dovecot is encrypted
> after STARTTLS, so Wireshark is pretty useless here.
> 
> Can you please point me to the right direction to log all SMTP commands?
> All is happening on Debian/buster, Dovecot 2.3.4.1.
> 
> -- 
> Victor Sudakov VAS4-RIPE
> http://vas.tomsk.ru/
> 2:5005/49 at fidonet

Sorry for sending empty mail first...

I would recommend using

   rawlog_dir = /var/tmp/dovecot/%u

and then ensuring that the directory, which expands to the username, *exists* and is *writable* to your mail user. Dovecot will not attempt to create this directory.

Aki