Changing Password Schemes

29 Apr 2016

      Good Day,
I have been following this tutorial without much luck -
http://wiki2.dovecot.org/HowTo/ConvertPasswordSchemes#CA-26af2b83a43b8100522...
It is obvious to me that I am not following the instructions correctly
and need to be shown what I am misunderstanding.
I have an old postfix + dovecot + Roundcube mailserver
(mail.domain.Tld). Server clock is loosing time and adjusting it causes
dovecot to kill itself, we cannot install more memory, bigger
hard-drives, etc.
I have built a new server box (mail2.domain.Tld) With Postfix + dovecot

Roundcube. This server is functioning, with a client's new domain, and
my personal domain. it's password system is SHA512-CRYPT.

I have imported the users from the old server over to the new server. I
have created a new column "plain_pass" for the plain passwords.
I will be using imapsync to transfer the mail folders from the one
server to the other, but will not proceed until I fix this issue.
# 2.2.18: /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.8 (0c4ae064f307+)
# OS: Linux 4.2.0-35-generic x86_64 Ubuntu 15.10 ext4
auth_mechanisms = plain login
first_valid_gid = 8
first_valid_uid = 150
last_valid_gid = 8
last_valid_uid = 150
listen = *
mail_gid = mail
mail_location = maildir:/var/vmail/%d/%n
mail_uid = vmail
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 =
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
plugin {
quota_grace = 10%%
quota_rule = *:storage=1G
quota_rule2 = Trash:storage=+100M
quota_warning = storage=95%% quota-warning 95 %u
quota_warning2 = storage=80%% quota-warning 80 %u
}
postmaster_address = postmaster@airnet.ca
protocols = imap pop3 lmtp lmtp pop3
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0666
user = postfix
}
unix_listener auth-userdb {
group = mail
mode = 0666
user = vmail
}
}
service imap-login {
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
}
service imap-postlogin {
executable = script-login /usr/local/etc/popafter.sh
user = $default_internal_user
}
service imap {
executable = imap imap-postlogin
}
service pop3-login {
inet_listener pop3 {
port = 110
}
inet_listener pop3s {
port = 995
ssl = yes
}
}
service pop3-postlogin {
executable = script-login /usr/local/etc/popafter.sh
user = $default_internal_user
}
service pop3 {
executable = pop3 pop3-postlogin
}
ssl_cert = 
-- ------------ You have a good day now, en mag jou môre ook so wees,
Carl A Jeptha