Dovecot + ISPConfig: Allow dots for IMAP folder
If Dovecot does not allow dots for IMAP foldernames, the “separator” has to be changed to support dots for folder names for Google Mail and Microsoft Exchange compatibility.
Allow Dovecot to use dots in IMAP folder
In Dovecot, the default separator for IMAP subfolders is:
.
The separator has to be changed to
/
ISPConfig will overwrite your dovecot.conf after every update, so put your custom settings in /usr/local/ispconfig/server/conf-custom/install/dovecot_custom.conf.master and do a “force upgrade” and let ISPConfig reconfigure Dovecot.
vi /usr/local/ispconfig/server/conf-custom/install/dovecot_custom.conf.master
protocol imap {
mail_plugins = imap_sieve quota imap_quota listescape
namespace {
type = private
separator = /
inbox = yes
}
}
protocol lda {
postmaster_address = [email protected]
mail_plugins = sieve quota listescape
namespace {
type = private
separator = /
inbox = yes
}
}
protocol lmtp {
postmaster_address = [email protected]
mail_plugins = sieve quota listescape
namespace {
type = private
separator = /
inbox = yes
}
}
Reconfigure services
ispconfig_update.sh --force
When asked for “Reconfigure Services” answer with “yes”.
Check configuration
dovecot -n | grep mail_plugins
mail_plugins = quota
mail_plugins = imap_sieve quota imap_quota listescape
mail_plugins = quota
mail_plugins = sieve quota listescape
mail_plugins = sieve quota listescape
dovecot -n | grep separator
separator = /
separator = /
separator = /
service dovecot status
● dovecot.service - Dovecot IMAP/POP3 email server
Loaded: loaded (/lib/systemd/system/dovecot.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2021-12-03 21:05:45 CET; 43min ago
Docs: man:dovecot(1)
http://wiki2.dovecot.org/
Main PID: 1535153 (dovecot)
Tasks: 10 (limit: 4566)
Memory: 11.5M
CGroup: /system.slice/dovecot.service
├─1535153 /usr/sbin/dovecot -F
├─1535160 dovecot/anvil
├─1535161 dovecot/log
├─1535162 dovecot/config
├─1535231 dovecot/imap-login
├─1535232 dovecot/stats
├─1535233 dovecot/auth
├─1535235 dovecot/imap
├─1542034 dovecot/quota-status -p postfix
└─1544267 dovecot/auth -w