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DKIM Settings
DomainKeys Identified Mail (DKIM) is a protocol that allows verifiable email transmission though ...
Message History
Hermes SEG keeps a log and a copy of each email message it sends and receives for archiving p...
Hermes SEG E-mail Flow
Incoming Normal Mail Flow Postfix TCP/25 --> SPF --> DKIM(Milter) TCP/8891 --> (Reinject)Postfix...
OVA/Hyper-V Appliance URL and Default Credentials
The following URL and default credentials are provided for reference, backup, restore and migrati...
Trust S/MIME Signing Certificates in Outlook
By default Hermes SEG uses self-signed S/MIME certificates for encryption and signing. E-mail cli...
Veeam Linux Backup Agent Script with E-mail Notifications
Original inspiration for the script came from a post on the Veeam forums by davide.depaoli with s...
How to Set PHP Options for Wordpress in Docker Compose
Create a new file named wordpress.ini and and enter the following entries in it: file_uploads = ...
Extract Certificate Information with OpenSSL
Fetch the X.509 Public Key Certificate File openssl s_client -connect google.com:443 -showcerts ...
Find out what's taking up all the space in your linux install
Example for / partition: du -h / | grep '[0-9\.]\+G'
Red Hat Enterprise Linux Firewall
Check Firewall Status: systemctl status firewalld Add a port to allowed ports for incoming traf...
Nginx Apache Guacamole Specific Directives
Enter the following directives under the / location of your site config: #guacamole specific d...
Enable Automatic E-mail Check and Desktop Notifications
Login to your webmail and click the icon on the top left (Figure 1): Figure 1 ...
Deeztek Hosted Mail DNS entries
The following entries must be set in customer's domain DNS records in order for Hosted Mail to fu...
Softether VPN Remote Access with Duo Multi-Factor Authentication (MFA)
This guide assumes you have a working Softether VPN server configured for remote access along wit...
Authentik and Traefik Integration
Inspiration and Credit: Brokenscripts This guide assumes you have a Traefik installation v2.7 or...
Nextcloud User Manual
Nextcloud User Manual can be found by following the link below: https://docs.nextcloud.com/serve...
Create OVA using vmware ovftool on ESXi or Vcenter
Download ovftool for Windows 64 from vmware.com and install. From an elevated command pr...
Install Zabbix Agent Ubuntu
Ubuntu 22.04 wget https://repo.zabbix.com/zabbix/5.0/ubuntu/pool/main/z/zabbix-release/zabbix-r...
SPF Settings
Sender Policy Framework (SPF) is a simple email-validation system designed to detect email spoofi...
Network Block/Allow
The IP & Network Override section will allow you to Permit or Deny specific IPs or Networks. The ...