Fighting SPAM with postfix and fail2ban

After detecting spammers with an RBL list you can block them for a predefined period of time with the help of fail2ban. How does it work:
– fail2ban parses mail.log
– when a spammer IP is found it is added to a temporary list
– future requests from the spammer’s IP is blocked Continue reading “Fighting SPAM with postfix and fail2ban”

Copy data from bloomberg sft with winscp cmd

It is a little bit tricky to run winscp command. Here is a working example:

  1. connect and authenticate with pre shared key
  2. synchronize all except bin,etc
  3. exit with correct exit code
  4. eventually run powershell script

 

Running screen with su

/etc/rc.local

/home/mdt/project1/scripts/run_workers.sh

 

Testing IO performance with variable block size on NTFS and REFS

Basic command:

raw data: Continue reading “Testing IO performance with variable block size on NTFS and REFS”

Control Webasto Parkin Heater with Meitrack GPS

Here is a schematic diagram of connecting Meitrack GPS to control Webasto parking heater.
You can turn it on/off with the following SMS:

Or use some web app…
Continue reading “Control Webasto Parkin Heater with Meitrack GPS”

Change local admin password with PowerShell

Change local admin password on multiple machines with PowerShell.

 

Convert VMDK to VHDX with powershell

 

NextCloud 12 Active Directory nested groups

Insert following query in editor:

 

Test it:

 

 

Recursively change folder permissions Exchange 2016