For the record, ever since the last patches for NFS got committed, we
don't see locking issues over NFS in general across all our platforms,
but it also depends on how you configure your NFS server.
You might find that this is not a dovecot issue, but an NFS issue.
You might want to post more about your NFS setup(s) and then someone on
the list might better assist you.
-- Michael --
On 2019-09-25 10:44 a.m., Asai via dovecot wrote:
Greetings,
We're in the process of upgrading our Dovecot server to new hardware and
new expanded storage. We planned on using an NFS share for the mail
storage, as we're running Postfix / Dovecot on a VM and wanted to
separate out the mail storage from the VM for backup reasons.
I read as much as I could find on line regarding configuring Dovecot to
use NFS, and set it up as best I could, but I'm still running into lock
errors e.g.:
Sep 25 10:30:35 triata4 dovecot:
imap([email protected])<75580><enQ/AWSTkQkKCgDu>: Error:
fcntl(/vmail/triata.globalchange.media/user/dovecot.index.log, write-lock, F_SETLKW)
locking failed: No locks available
Sep 25 10:30:35 triata4 dovecot:
imap([email protected])<75580><enQ/AWSTkQkKCgDu>: Error:
mail_index_wait_lock_fd() failed with file
/vmail/triata.globalchange.media/user/dovecot.index.log: No locks available
Also, I have been trying to configure the Dovecot submission service to
authenticate with Postfix, but I keep running into errors which are
related to how I'm configuring the authentication. How do we set the
user@domain and password string for submission in the configs?
Thank you.
Please see doveconf -n below, if you see any other errors in this
config, I'd be grateful if you pointed them out:
# 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.7.2 (7372921a)
# OS: Linux 3.10.0-957.27.2.el7.x86_64 x86_64 CentOS Linux release
7.6.1810 (Core) nfs
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = plain
debug_log_path = /var/log/dovecot-debug.log
deliver_log_format = msgid=%m: from=%f: %$
hostname = triata.globalchange.media
mail_debug = yes
mail_fsync = always
mail_home = /vmail/%d/%n/home
mail_location = maildir:/vmail/%d/%n
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 index ihave duplicate mime foreverypart extracttext
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
separator = /
type = private
}
passdb {
args = /etc/dovecot/dovecot-mysql.conf
driver = sql
}
plugin {
mail_log_fields = uid box msgid from flags
sieve = file:/vmail/%d/%n/sieve;active=/vmail/%d/%n/.dovecot.sieve
}
protocols = imap lmtp submission sieve
service auth {
unix_listener /var/spool/postfix/private/auth {
mode = 0666
}
unix_listener auth-userdb {
group = vmail
mode = 0666
user = vmail
}
}
service imap-login {
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
}
service lmtp {
unix_listener lmtp {
mode = 0666
}
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
process_min_avail = 0
service_count = 1
vsz_limit = 64 M
}
service managesieve {
process_limit = 1024
}
service submission-login {
inet_listener submission {
port = 587
}
}
ssl_cert = </etc/letsencrypt/live/triata.globalchange.media/fullchain.pem
ssl_key = # hidden, use -P to show it
submission_relay_host = triata.globalchange.media
submission_relay_password = # hidden, use -P to show it
submission_relay_port = 587
submission_relay_ssl = starttls
submission_relay_trusted = yes
submission_relay_user = %u
userdb {
args = /etc/dovecot/dovecot-mysql.conf
driver = sql
}
protocol lda {
mail_plugins =
}
--
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Visit us at http://www.linuxmagic.com @linuxmagic
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