[Dovecot] a strange doveadm behavior

[fakessh @]

hi timo
very very good job you realize for the community

here I have a very strange problem with doveadm
I actually use a configuration file parameters in which the parameters
are placed carefully

My problem appears when I run this command
doveadm expunge -A mailbox Trash savedbefore 30d
i post command and result to the terminal
[fakessh at r13151 ~]$ doveadm expunge -A mailbox Trash savedbefore 30d
doveadm(fakessh): Error: userdb lookup:
connect(/var/run/dovecot//auth-userdb) failed: Permission denied
(euid=514(fakessh) egid=100(users) missing +r
perm: /var/run/dovecot//auth-userdb, euid is not dir owner)
doveadm: Error: Failed to iterate through some users
[root at r13151 ~]$ chmod +r  /var/run/dovecot/auth-userdb 
[fakessh at r13151 ~]$ doveadm expunge -A mailbox Trash savedbefore 30d
doveadm(fakessh): Error: userdb lookup:
connect(/var/run/dovecot//auth-userdb) failed: Permission denied
(euid=514(fakessh) egid=100(users) missing +w
perm: /var/run/dovecot//auth-userdb, euid is not dir owner)
doveadm: Error: Failed to iterate through some users
[root at r13151 ~]# chmod og+w  /var/run/dovecot/auth-userdb
[fakessh at r13151 ~]$ doveadm expunge -A mailbox Trash savedbefore 30d
doveadm(dkimproxy): Fatal: seteuid(0) failed: Operation not permitted
[fakessh at r13151 ~]$ 

any kind of discussion would be welcome

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