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T313C0mun1s7
/ dmarc.sh
Created
October 14, 2025 01:39
bash script to update all AWS Route 53 DMARC records with p=none to p=reject
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| #!/usr/bin/env bash | |
| # | |
| # Update DMARC TXT records in Route 53 from "p=none" to "p=reject". | |
| # - Scans all hosted zones. | |
| # - Matches any TXT record whose leftmost label is "_dmarc" (apex or subdomain). | |
| # - Only changes the "p=none" part; everything else stays the same. | |
| # | |
| # Usage: | |
| # DRY_RUN=true ./dmarc.sh # default, prints intended changes only | |
| # DRY_RUN=false ./dmarc.sh # performs UPSERTs |
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| #!/bin/bash | |
| # Script to update SmarterMail on an Ubuntu server | |
| # This script automatically scrapes the release notes page to find the latest build number, | |
| # then downloads and installs the latest version of SmarterMail. | |
| # Constants | |
| RELEASE_NOTES_URL="https://www.smartertools.com/smartermail/release-notes/current" | |
| LOG_FILE="/var/log/smartermail_update.log" | |
| MAX_LOG_SIZE=10485760 # 10MB |