Hi Angel,
Angel L. Mateo wrote:
I have a user, its assigned server is 155.54.211.164. The problem is that I don't know why director sent him yesterday to a different server, because my server was up all the time. Moreover, I'm using poolmon in director servers to check availability of final servers and it didn't report any problem with the server.
Which version of dovecot are you using? "doveconf -n" of director and mailbox instance?
You should monitor the output of doveadm director status username@example.org doveadm director ring status on each of the directors over time with a timestamp.
This might shed some light on where the user is directed and why, and ring status will tell which directors can see each other. doveadm director move can also influence where a user is sent, but this will be reflected by "Current:" entry of director status, there you can also find the time when the entry in hashtable will expire.