If you are using systemd, you might want to create

/etc/systemd/system/service.dovecot.d/override.conf

with

ProtectSystem=no

if you want writable /etc directory.

On 28 November 2018 at 18:49 Maria Arrea maria-arrea@gmx.com wrote:

Since I upgraded to 2.3.4 I have lots of line in logs like these:

Nov 28 17:35:48 buzalum_rhel7 dovecot: imap(iniramgon@mydomain): Error: unlink(/etc/dovecot/virtual/dovecot-acl-list) failed: Read-only file system (in acl-backend-vfile-acllist.c:338) Nov 28 17:35:48 buzalum_rhel7 dovecot: imap(iniramgon@mydomain): Error: dovecot-acl-list creation failed: safe_mkstemp(/etc/dovecot/virtual/.temp.buzalum_rhel7.6469.) failed: Read-only file system

These lines did not happen with Dovecot 2.3.2.1. doveconf -n output below. I have also tested to create an emty file with userid entrega in /etc/dovecot/virtual/ and works, so it does not seem a problem with permissions. Any idea about this problem?

# OS: Linux 3.10.0-862.14.4.el7.x86_64 x86_64 Red Hat Enterprise Linux Server release 7.5 (Maipo) xfs # Hostname: buzalum_rhel7 auth_cache_negative_ttl = 10 secs auth_cache_size = 10 M auth_cache_ttl = 2 mins auth_master_user_separator = * auth_mechanisms = plain login auth_worker_max_count = 90 base_dir = /var/run/dovecot/ default_client_limit = 8192 default_process_limit = 4500 disable_plaintext_auth = no imap_capability = +XLIST imap_client_workarounds = tb-extra-mailbox-sep delay-newmail tb-lsub-flags imap_id_log = * lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_fsync = never mail_gid = entrega mail_home = /buzones/mydomain/%2.26Hn/%2.200Hn/%n/home_usuario/ mail_location = mdbox:/buzones/mydomain/%2.26Hn/%2.200Hn/%n:INDEX=/indices_dovecot/indices/%2.26Hn/%2.200Hn/%n:ALT=/buzones/alternativo/mydomain/%2.26Hn/%2.200Hn/%n mail_log_prefix = "%s(%u)<%{session}>: " mail_max_userip_connections = 15000 mail_plugins = " virtual zlib quota acl mail_log notify" mail_uid = entrega managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date mdbox_rotate_interval = 1 days mdbox_rotate_size = 60 M namespace { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox SPAM { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = type = private } namespace { list = yes location = mdbox:/buzones/mydomain/%%2.26Hn/%%2.200Hu/%%n:ALT=/buzones/alternativo/mydomain/%%2.26Hn/%%2.200Hn/%%n:INDEX=/indices_dovecot/indices/%%2.26Hn/%%2.200Hn/%%n:INDEXPVT=~/mdbox/carpeta_compartida/%%u prefix = carpeta_compartida/%%u/ separator = / subscriptions = no type = shared } namespace { list = yes location = virtual:/etc/dovecot/virtual:INDEX=~/mdbox/virtual:CONTROL=~/mdbox/virtual prefix = Carpetas_virtuales/ separator = / } passdb { args = /etc/dovecot/deny deny = yes driver = passwd-file } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } plugin { acl = vfile acl_shared_dict = file:/buzones/mydomain/acls_compartidas.db lda_mailbox_autosubscribe = yes mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size subject from quota = dict:Cuota de usuario::file:/buzones/cuotas/%n quota_rule2 = Trash:storage=+10%% quota_warning = storage=90%% aviso_cuota 90 %u sieve = /buzones/mydomain/%2.26Hn/%2.200Hn/%n/home_usuario/dovecot.sieve sieve_dir = /buzones/mydomain/%2.26Hn/%2.200Hn/%n/home_usuario/sieve/ zlib_save = gz zlib_save_level = 9 } pop3_no_flag_updates = yes protocols = pop3 imap sieve service anvil { client_limit = 8504 } service auth { client_limit = 12000 unix_listener auth-master { user = entrega } unix_listener auth-userdb { user = entrega } user = root } service aviso_cuota { executable = script /usr/local/bin/quota-warning.sh unix_listener aviso_cuota { mode = 0666 } user = entrega } service config { process_min_avail = 1 } service imap-login { executable = /usr/libexec/dovecot/imap-login group = dovenull process_limit = 8000 process_min_avail = 1 vsz_limit = 1 G } service imap { executable = /usr/libexec/dovecot/imap process_limit = 8000 } service managesieve-login { executable = /usr/libexec/dovecot/managesieve-login inet_listener sieve { port = 2000 } process_limit = 8000 vsz_limit = 1 G } service managesieve { executable = /usr/libexec/dovecot/managesieve process_limit = 8000 } service pop3-login { executable = /usr/libexec/dovecot/pop3-login process_limit = 8000 process_min_avail = 1 vsz_limit = 1 G } service pop3 { executable = /usr/libexec/dovecot/pop3 process_limit = 8000 } service stats { fifo_listener stats-mail { mode = 0600 user = entrega } } ssl_ca = XXX ssl_cert = XXX ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } userdb { args = /etc/dovecot/dovecot-ldap-userdb.conf driver = ldap } verbose_proctitle = yes protocol sieve { managesieve_implementation_string = dovecot managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 65536 } protocol lda { hostname = mydomain info_log_path = log_path = mail_fsync = optimized mail_plugins = virtual sieve zlib quota postmaster_address = evcorreo@us.es syslog_facility = mail } protocol imap { mail_plugins = virtual zlib quota imap_quota acl imap_acl notify mail_log } protocol pop3 { mail_plugins = zlib quota virtual pop3_enable_last = yes pop3_uidl_format = %g }