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CentOS7 Xen grub2 can’t find command multiboot – solution

6. May 2017 | 1 min read | 0 Comments |

Ok so you have a fresh installation of CentOS7 were following the CentOS Xen quick start and you have an EFI BIOS and you’re unable to boot the Xen kernel. This is how it’s fixed: You boot from any other kernel and login, etc..

cp -a /usr/lib/grub/x86_64-efi /boot/efi/EFI/centos/

1	cp -a /usr/lib/grub/x86_64-efi /boot/efi/EFI/centos/

Then edit /boot/efi/EFI/centos/grub.cfg (with nano, vi, vim or whatever) Right…

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Nichts als Probleme mit dem BenQ Support

11. April 2017 | 3 min read | 0 Comments |

Im Dezember 2016 kaufte ich mir, für mich als Geburtstagsgeschenk und weil ich Geld ausgeben musste einen BenQ BL3201PT. Ein 32″ 4k Monitor 3840×2160 Auflösung mit 10bit Farbtiefe.

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Öffentliche IPv6 im Gast mit libvirt bei Hetzner

9. April 2017 | 3 min read | 0 Comments |

So, ich habe mir einige Blogposts angesehen und auch die Hetzner Wiki verschlungen und nichts klappte so richtig. Damit hat es geklappt: Um das Grundlegende zu verstehen, wir haben ein frisch aufgesetztes System das systemd nutzt und deshalb die ifaces z.B. enp5s0 oder eno1 nennt. eth0, enp5s0, enp4s0, eno1 usw. ist hier in diesem Kontext…

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Firefox sperrt Youtube Unblocker

2. March 2016 | 1 min read | 0 Comments |

Gerade eben, vor ca. 5 Minuten öffnete sich eine Meldung das der Youtube unblocker gesperrt wurde. Es ist jetzt 10:44 Uhr. Angeblich wegen “Sicherheitsbedenken”. Der Youtube unblocker tut was der Name vermutet. Er entsperrt regional gesperrte Videos und umgeht so ohne viel Aufwand die GEMA-Zensur. Ist es reine Willkür von Firefox, die in letzter Zeit…

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postfix dovecot vmail virtual mailserver

26. January 2016 | 1 min read | 0 Comments |

my dovecot.conf

## Dovecot configuration file
protocols = imap pop3
auth_mechanisms = plain
passdb {
driver = sql
args = /etc/dovecot/dovecot-sql.conf
}
userdb sql {
driver = sql
args = /etc/dovecot/dovecot-sql.conf
}
service auth {
unix_listener auth-client {
group = postfix
mode = 0660
user = postfix
}
user = root
}
mail_home = /home/vmail/%d/%u
mail_location = maildir:~
ssl_cert = </etc/ssl/private/postfix.crt
ssl_key = </etc/ssl/private/postfix.key
listen = *, ::
login_greeting = Dovecot ready.

## Dovecot configuration file

protocols = imap pop3

auth_mechanisms = plain

passdb {

driver = sql

args = /etc/dovecot/dovecot-sql.conf

}

userdb sql {

driver = sql

args = /etc/dovecot/dovecot-sql.conf

}

service auth {

unix_listener auth-client {

group = postfix

mode = 0660

user = postfix

}

user = root

}

mail_home = /home/vmail/%d/%u

mail_location = maildir:~

ssl_cert = </etc/ssl/private/postfix.crt

ssl_key = </etc/ssl/private/postfix.key

listen = *, ::

login_greeting = Dovecot ready.

dovecot-sql.conf

driver = mysql
connect = host=127.0.0.1 dbname=postfix_db user=postfix_user password=the_password
# The new name for MD5 is MD5-CRYPT so you might need to change this depending on version
default_pass_scheme = SHA512-CRYPT
# Get the mailbox
user_query = SELECT '/home/vmail/%d/%u' as home, 'maildir:/home/vmail/%d/%u' as mail, 5000 AS uid, 5000 AS gid, concat('dirsize:storage=',  quota) AS quota FROM mailbox WHERE username = '%u' AND active = '1'
# Get the password
password_query = SELECT username as user, password, '/home/vmail/%d/%u' as userdb_home, 'maildir:/home/vmail/%d/%u' as userdb_mail, 5000 as  userdb_uid, 5000 as userdb_gid FROM mailbox WHERE username = '%u' AND active = '1'
# If using client certificates for authentication, comment the above and uncomment the following
#password_query = SELECT null AS password, ‘%u’ AS user

driver = mysql

connect = host=127.0.0.1 dbname=postfix_db user=postfix_user password=the_password

# The new name for MD5 is MD5-CRYPT so you might need to change this depending on version

default_pass_scheme = SHA512-CRYPT

# Get the mailbox

user_query = SELECT '/home/vmail/%d/%u' as home, 'maildir:/home/vmail/%d/%u' as mail, 5000 AS uid, 5000 AS gid, concat('dirsize:storage=', quota) AS quota FROM mailbox WHERE username = '%u' AND active = '1'

# Get the password

password_query = SELECT username as user, password, '/home/vmail/%d/%u' as userdb_home, 'maildir:/home/vmail/%d/%u' as userdb_mail, 5000 as userdb_uid, 5000 as userdb_gid FROM mailbox WHERE username = '%u' AND active = '1'

# If using client certificates for authentication, comment the above and uncomment the following

#password_query = SELECT null AS password, ‘%u’ AS user

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