> > >> >> 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
