List all Flatpak application
flatpak listRemoving multiple Flatpak application at once by:
flatpak uninstall --unused
or
flatpak uninstall --allflatpak repairCategory: For IT
Windows Based PC
Compression / decompression
Remote Desktop / assistance
Codecs / Video playback
Office Suite
Categories
Debian 11: how to add a user to sudoers
Its pretty easy
su root
nano /etc/sudoers
At the end of the file, add the following line:
yourusername ALL=(ALL:ALL) ALL
Categories
Quick disk speed test
Open a CMD as administrator
type “winsat disk –drive c”
#Reject Email if SMTP Client Has no PTR record
#Reject Email if SMTP Client Hostname doesn’t have valid A Record
#Reject Email If MAIL FROM Domain Has Neither MX Record Nor A Record
smtpd_sender_restrictions =
permit_mynetworks
permit_sasl_authenticated
reject_unknown_sender_domain
reject_unknown_reverse_client_hostname
reject_unknown_client_hostname
#Enable HELO/EHLO Hostname Restrictions in Postfix
smtpd_helo_required = yes
smtpd_helo_restrictions =
permit_mynetworks
permit_sasl_authenticated
reject_invalid_helo_hostname
reject_non_fqdn_helo_hostname
reject_unknown_helo_hostname
More on https://www.linuxbabe.com/mail-server/block-email-spam-postfix
Categories
Check Exchange Server connection to AD
Error message: Active directory response: The LDAP server is unavailable.
- Check DNS configuration at network controller
- Run below command in command prompt
netdom query fsmo