How to activate Steempress plugin in WordPress !

A week ago, I posted on a story about how to integrate wordpress with Blockchain steem. Here link!

Now I post from my blog that built with CMS wordpress where I installed and activated the stempress!

Let’s start with activating the steempres plugin.

As you can see in the picture you have to click on the “Activate” button and it should look like Stempress!

Now click on the settings and go to the activation menu.
Here we have to connect with the user and “Posting key” from the steem.
The “Posting key” is taken from our account on
Click on “SHOW PRIBATE KEY” to show your real key for login.  What you see at first time it’s not your real key.

Once you log in, it should look like this!
That’s all, when you post, you have the option of posting what you write on the blog or not on steem Blockchain. See picture!

I think this is the first wordpress written post that also appears on Steem blockchain.

I wish you an excellent day!

Postfix user sender resctriction

Hello all !

Today we want to restrict local user to send mail to more destinations!

1 First step

postconf -e 'smtpd_recipient_restrictions = check_sender_access hash:/etc/postfix/restricted_senders'
postconf -e 'smtpd_restriction_classes = local_only'
postconf -e 'local_only = check_recipient_access hash:/etc/postfix/local_domains, reject'

2. Step 2 Then create the file /etc/postfix/restricted_senders which looks similar to this one:        local_only       local_only

3. Final step Afterwards create /etc/postfix/local_domains which should look similar to this:                  OK                 OK             OK

After this restart your server postfix! Enjoy!
(Source Thanks falko )

How to add repository to your Edge Router Lite!

Hello in new year 2018 !

Today we add repository to Edge router lite for install more apps used in cli mode.

Log with ssh to your edge router lite or with cli:


sudo bash

and paste next commands

set system package repository wheezy components 'main contrib non-free'
set system package repository wheezy distribution wheezy
set system package repository wheezy password ''
set system package repository wheezy url ''
set system package repository wheezy username ''
set system package repository wheezy-backports components main
set system package repository wheezy-backports distribution wheezy-backports
set system package repository wheezy-backports password ''
set system package repository wheezy-backports url ''
set system package repository wheezy-backports username ''
set system package repository wheezy-updates components 'main contrib'
set system package repository wheezy-updates distribution wheezy/updates
set system package repository wheezy-updates password ''
set system package repository wheezy-updates url ''
set system package repository wheezy-updates username ''

after this type

apt-get update

Now you can install nmap.

apt-get install nmap

Enjoy !

How to upgrade roundcubemail! From 1.1.1 to 1.3.3

This day we make update update to new version roundcubemail-1.3.3

    1. First step  make backup of actual version.
cp -R -p webmail_old/ /root/work/webmail_old-20171221
mysqldump -uroot -p yourpassword --routines --single-transaction your_roundcube_db > /etc/sqldump/your_roundcube_db.dump.sql

2. Second step download new version.


3. Unarhive and test if you have all you need to run

tar -zxvf roundcubemail-1.3.3-complete.tar.gz -C /path/to/folder/
( ex: tar -zxvf roundcubemail-1.3.3-complete.tar.gz -C /var/www/html/ )
read file roundcubemail-1.3.3/UPGRADING for REQUIREMENTS and roundcubemail-1.3.3/INSTALL

4. Final step, upgrade roundcubemail.

roundcubemail-1.3.3/bin/ webmail_old/
Upgrading from 1.1.1. Do you want to continue? (y/N)

Tips after update:
a. Check .htaccess settings (some php settings could become required)
b. If you’re using build-in addressbook, run indexing script /bin/
c. When upgrading from version older than 0.6-beta you should make sure
your folder settings contain namespace prefix. For example Courier users
should add INBOX. prefix to folder names in main configuration file.
d. Change layout in file  roundcubemail-1.3.3/config/

// Interface layout. Default: 'widescreen'.
//  'widescreen' - three columns
//  'desktop'    - two columns, preview on bottom
//  'list'       - two columns, no preview
$config['layout'] = 'widescreen';

default come with ‘widescreen’ but I like ‘desktop’.
and ‘show_images‘ change to 1.

// display remote inline images
// 0 - Never, always ask
// 1 - Ask if sender is not in address book
// 2 - Always show inline images
$config['show_images'] = 0;

Enjoy !

Update Centos 6.x to 6.9 and fail connect to Openvpn!

This week update to last vesion of centos 6.9 and find Openvpn do not work.

Error: ERROR: depth=0, error=certificate signature failure:
OpenSSL: error:140890B2:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned

RHEL 6.9 / Centos 6.9 remove Deprecated Insecure Algorithms and Protocols link.

More info: CentOS 6.9 Release Notes

Solution 1:  Remove old keys from your Openvpn server and create new key.
Solution 2: Add exception for keys you have now but don’t forget to change keys in soon as posible.


echo -e “LegacySigningMDs md2 md5\nMinimumDHBits 512\n” >> /etc/pki/tls/legacy-settings
service openvpn restart

Enjoy for today !

Adding the new MySQL user with access in database and just one table!

Q: I would like to know how to give permission to the database user logged in to access only one table and not whole database?
A: 1. Create user:
CREATE USER 'userlimit'@'%' IDENTIFIED BY 'NewPassword';
2. Now run the following to grant the SELECT privilage to the table and database selected ( where you wish ).
GRANT SELECT ON database_name.table_name TO 'userlimit'@'%';

MariaDB [database_name]> select * from loturi;
ERROR 1142 (42000): SELECT command denied to user 'userlimit'@'localhost' for table 'loturi'

How remove a lot of mail from mailq with few cli comands.


We have a lot of mail with errors like:

D7AF9121256 34341 Tue Nov 21 11:19:27 MAILER-DAEMON ……….

We want to remove them.

First commands:

mailq | grep MAILER-DAEMON | awk ‘{ print $1 }’ > /root/mailq-201711.txt

Here we catch the ID like D7AF9121256 each mail and save in file /root/mailq-201711.txt.

cat /root/mailq-201711.txt


Now we have to remove caracacter * from each ID because we get error to next commands.
Open file /root/mailq-201711.txt with vim and execute commands :1,$ s/*/<space>/g   where 1 it’s first line and $ last line.   Save file and exit ( :wq )

And now delete mails form mailq with:

while read i; do postsuper -d $i; done </root/mailq-201711.txt

After read each line I delete ID with postsuper -d $i and read next line.   Enjoy!

Config for Samba to allow login Windows XP

Today I found a solution for Samba 4.6.2 in Centos 7.4 for all versions of Windows from 7 upwards are able to connect less Windows XP.

Word in smb.conf

lanman auth = yes
ntlm auth = yes

That’s how the config looks:

workgroup = SAMBA
server string = Samba
netbios name = Samba
interfaces =
hosts allow = 127. 192.168.22. 192.168.0.
max protocol = SMB2
socket options = TCP_NODELAY
read raw = no
log file = /var/log/samba/log.%m
max log size = 500

lanman auth = yes
ntlm auth = yes

security = user
map to guest = bad user

passdb backend = tdbsam

local master = yes
os level = 255
preferred master = yes
printing = cups
printcap name = cups
load printers = no
cups options = bsd

I think this information will help you if you have Windows XP computers on your network.