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Concurrent access is not supported. One user should access mail using one backend at a time. You can use dovecot in director mode to prevent this.
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Aki
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On 19 October 2018 at 16:47 Albert Whale <
<a href="mailto:Albert.Whale@IT-Security-inc.com">Albert.Whale@IT-Security-inc.com</a>> wrote:
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Yes, there is currently concurrent usage because the Mail spool is NFS
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Mounted.
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Here is the current configuration:
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dovecot -n
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# 2.1.15: /etc/dovecot/dovecot.conf
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# OS: Linux 3.10.54-server-2.mga3 i686 Mageia 3
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base_dir = /var/run/dovecot/
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disable_plaintext_auth = no
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lock_method = dotlock
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login_greeting = SpamZapper Email ready.
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login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
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mail_debug = yes
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mail_fsync = always
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mail_location = maildir:~/Maildir
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mail_nfs_index = yes
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mail_nfs_storage = yes
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mail_privileged_group = mail
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mbox_lock_timeout = 15 mins
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mmap_disable = yes
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passdb {
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driver = pam
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}
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protocols = imap pop3
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service anvil {
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client_limit = 1000
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process_limit = 1
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}
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service auth {
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user = root
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}
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service imap-login {
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chroot = login
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client_limit = 10
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user = dovecot
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vsz_limit = 256 M
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}
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service pop3-login {
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chroot = login
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client_limit = 1024
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user = dovecot
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}
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ssl = no
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syslog_facility = local2
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userdb {
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driver = passwd
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}
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verbose_proctitle = yes
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protocol pop3 {
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mail_max_userip_connections = 20
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pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
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pop3_uidl_format = %08Xv%08Xu
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}
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protocol lda {
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postmaster_address =
<a href="mailto:postmaster@example.com">postmaster@example.com</a>
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}
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protocol imap {
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mail_max_userip_connections = 30
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}
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For the time being, I have isolated usage of POP3 connections on a single
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Servers, however IMAP is especially problematic.
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From: Aki Tuomi [mailto:
<a href="mailto:aki.tuomi@open-xchange.com">aki.tuomi@open-xchange.com</a>]
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Sent: Friday, October 19, 2018 2:51 AM
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To: Albert Whale <
<a href="mailto:Albert.Whale@IT-Security-inc.com">Albert.Whale@IT-Security-inc.com</a>>;
<a href="mailto:dovecot@dovecot.org">dovecot@dovecot.org</a>
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Subject: Re: Dovecot 2.2.13 error message
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On 18.10.2018 15.15, Albert Whale wrote:
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In attempting to reactivate my IMAP communications with my Email Spool (NFS
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Mounted), I have gotten the following while attempting to download the
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Emails via POP3.
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Oct 18 08:00:45 ns4 dovecot: pop3-login: Login: user=<aewhale>,
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method=PLAIN, rip=74.109.213.194, lip=66.207.133.232
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Oct 18 08:02:40 ns4 dovecot: pop3(aewhale): Error: Timeout (180s) while
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waiting for dotlock for transaction log file
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/home/aewhale/Maildir/dovecot.index.log
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Oct 18 08:02:40 ns4 dovecot: pop3(aewhale): Disconnected: Storage error
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during logout. top=0/0, retr=11511/1566975544, del=11511/11511,
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size=1566691807
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Oct 18 08:02:58 ns4 dovecot: pop3(aewhale): Connection closed top=0/0,
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retr=0/0, del=0/11520, size=1566929900
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This is significantly more information than what I can receive from 2.1.15,
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but still does not resolve the communications issues.
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Any help is certainly appreciated.
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--
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Albert E. Whale, CEH CHS CISA CISSP
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Hi!
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Seems something is locking the index. Do you have concurrent usage between
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two or more nodes for same user?
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Aki
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---
<br>Aki Tuomi
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