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Hermes SEG Email Flow
Hermes SEG Email Flow Reference diagram for the inbound, outbound, and CipherMail-originated mail paths inside the Docker stack. Includes every listening port, every container, the milter chain at each smtpd service, and where body modifications occur relative...
Post-Restore Steps
Post-Restore Steps Run after scripts/system_restore.sh completes. The restore replaces databases, LDAP, and the storage tiers, but a few things must be reconciled by hand depending on whether you restored onto the same host or a different host (cross-host dis...
Proxmox
Miscellaneous Proxmox Commands
Get VM Disk Usage (assumes ZFS pool is "pool1" adjust accordingly): zfs list -t volume -o name,volsize,used -r pool1 | awk 'NR==1 || $1 ~ /^pool1\/vm-/' Show VM Disk Reseervations in Pool (assumes ZFS pool is "pool1" adjust accordinly). if refreservation is no...
Install Docker and Docker Compose
Install Docker Engine and Compose Run these in a shell on your Ubuntu 24.04 box: # 1) Prereqs and keyring directory sudo apt update sudo apt install -y ca-certificates curl gnupg sudo install -m 0755 -d /etc/apt/keyrings # 2) Add Docker’s official GPG key curl...
Link Guard
Link Guard Pro Edition feature. Maps to Email Policies > Link Guard ( view_linkguard.cfm, inc/linkguard_write_and_reload.cfm). Link Guard provides time-of-click protection for inbound mail. Links in delivered messages are rewritten to point at a Hermes redire...
Switching a Primary User Between ThinLinc and xrdp from SSH
This document describes a practical way to run both ThinLinc and xrdp on the same Ubuntu 24.04 system while using a single primary account. The safest operating model on modern Ubuntu/GNOME is to allow only one graphical session at a time for that user, then s...
Enable passwordless sudo for user
echo 'someuser ALL=(ALL) NOPASSWD:ALL' | sudo tee /etc/sudoers.d/someuser-nopasswd sudo chmod 440 /etc/sudoers.d/someuser-nopasswd sudo visudo -c # sanity-check sudoers syntax
How to resizea Linux (Ubuntu) disk in Proxmox
In proxmox, ensure the VM is off and then select the VM you wish to resize the disk. Click on Hardware, locate and select the disk and then on top click on Disk Action --> Resize. In the Resize disk window enter the size in GB you wish to increase by and click...
Post-Migration Checklist: Legacy → Docker
Post-Migration Checklist: Legacy → Docker Run these steps after scripts/migrate_legacy_to_docker.sh completes. The migration restores the databases and portable data (encryption key, TLS certs, DKIM signing keys), migrates admin users to LDAP, and — at the en...
Install Softether VPN client on Linux Script
Save the following into a install-softether-vpnclient.sh file and ensure you make it executable (chmod +x install-softether-vpn-client.sh: #!/usr/bin/env bash # # install-softether-client.sh — relocate a built SoftEther VPN *Client* into # /usr/local/vpnclient...