On 1. Oct 2020, at 11.18, rudolf@padaru.de wrote:

Hey,
 
i have an question about the deliver_log_format.
 
My log looks sometimes like:  
Oct 1 09:38:01 dd44414 dovecot: lda(user)<20009><9MYzGVmHdV8pTgAA+v7NQw>: msgid=<20201001073801.628713AC05DC@myserver.com>: saved mail to INBOX
 
The deliver_log_format settings are still on default. Are somebody able to explain me this part of the log message? <20009><9MYzGVmHdV8pTgAA+v7NQw>: 


deliver_log_format is prefixed with mail_log_prefix. default setting is "%s(%u)<%{pid}><%{session}>:"

so service, userid, process id, session id.

deliver_log_format part then starts from msgid.

Sami