read state not propagated

[aki.tuomi]

> On 29/12/2020 13:27 Marc Roos <m.roos at f1-outsourcing.eu> wrote:
> 
>  
> >
> >
> >>  
> >> I have migrated the inbox namespace from mbox to mdbox by doing a 
> >> doveadm backup to the new server. Both servers are having CentOS7 + 
> >> dovecot-2.2.36-6.el7_8.1.x86_64, both servers have identical 
> >> configurations (new server has some different vsz_limits and stats
> >> enabled)
> >> 
> >> Now a user complains that an imap mailbox he opens at the same time 
> >> with a colleague does not propagate the 'read' state. Previously if 
> >> his colleague read the message, it would show on his mailbox also 
> 'read'.
> >> After the transfer it keeps being unread for him.
> >> 
> >> Am I correct to assume that he should indeed get an updated to 
> 'read'? 
> >> Where should I look to fix this? What can be the cause of this?
> >
> >How are they accessing the mailbox? Same credentials?
> 
> yes, mostly just 2nd account in apple mail client

Can you somehow confirm that the "read" status is not available for the 2nd user in dovecot indexes? Maybe use mail_log plugin to see when the flag changes occur?

Aki