Marcus Summers
110a6d49e5
New 02-selfhosting/services article: the full Postfix/Dovecot inbound spam stack on Fedora — spamass-milter tag-only wiring (the -r footgun), socket permissions (sa-milt group + UMask), site-wide Bayes DB, Sieve-to-Junk, and sa-learn training (folders, spam/ham balance, manual-not-cron). From the majormail setup. Also extends selinux-dovecot-vmail-context with a Permissive-mode variant + a postfix_cleanup->mysqld_etc companion-denial note. SUMMARY.md nav updated.
14 KiB
14 KiB
| created | updated |
|---|---|
| 2026-04-02T16:03 | 2026-05-15T09:00 |
- Home
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- Mastodon Instance Tuning
- Mastodon Post-Install Hardening (Permissions + Account)
- Mastodon — The
--prune-profilesTrap and How to Recover - Mastodon on S3 — Silent Upload Failures (BucketOwnerEnforced/ACLs)
- Ghost Email Configuration with Mailgun
- Inbound Spam Filtering: spamass-milter + SpamAssassin Bayes
- Claude Code Remote Control — Mobile Access to a Persistent Host Session
- Linux Server Hardening Checklist
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- Fail2ban Custom Jail: WordPress Login Brute Force
- wp-fail2ban Plugin Logpath on Debian/Ubuntu (auth.log not syslog)
- SELinux: Fixing Fail2ban grep execmem Denial
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- SSH Hardening Fleet-Wide with Ansible
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- Apache CVE-2026-23918 — HTTP/2 Double Free Mitigation
- Open Source & Alternatives
- SearXNG: Private Self-Hosted Search
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- Gitea: Self-Hosted Git
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- Ventoy: Multi-Boot USB Tool
- Vaultwarden: Self-Hosted Password Manager
- yt-dlp: Video Downloading
- Streaming & Podcasting
- Troubleshooting
- Apache Outage: Fail2ban Self-Ban + Missing iptables Rules
- Postfix + SendGrid: TLS Handshake Failure (Port 465 vs 587)
- Mail Client Stops Receiving: Fail2ban IMAP Self-Ban
- firewalld: Mail Ports Wiped After Reload
- Tailscale SSH: Unexpected Re-Authentication Prompt
- ssh.socket Unreachable After Reboot (Tailscale Race Condition)
- Fail2ban & UFW Rule Bloat Cleanup
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web_log_1m_successfulfor Redirect-Heavy WordPress Sites - Castopod: Stale Federated Avatar URLs After Remote Profile Updates
- Castopod Posts Don't Appear on Mastodon — Diagnosing the Federation Path
- Nextcloud AIO Unhealthy 20h After Nightly Update
- n8n Behind Reverse Proxy: X-Forwarded-For Trust Fix
- Docker & Caddy Recovery After Reboot (Fedora + SELinux)
- ISP SNI Filtering with Caddy
- Obsidian Vault Recovery — Loading Cache Hang
- Qwen2.5-14B OOM on RTX 3080 Ti (12GB)
- LoRA adapter — GGUF conversion fails with 'config.json not found'
- yt-dlp YouTube JS Challenge Fix on Fedora
- Gemini CLI Manual Update
- MajorWiki Setup & Publishing Pipeline
- Gitea Actions Runner: Boot Race Condition Fix
- Cron Heartbeat False Alarm: /var/run Cleared by Reboot
- SELinux: Fixing Dovecot Mail Spool Context (/var/vmail)
- mdadm RAID Recovery After USB Hub Disconnect
- Windows OpenSSH Server (sshd) Stops After Reboot
- Windows OpenSSH: WSL Default Shell Breaks Remote Commands
- Pi-hole AI Blocklist Blocks Claude Desktop (ERR_CONNECTION_REFUSED)
- Claude Desktop MCP Server Started via wsl.exe Sees Empty Environment (WSLENV)
- Claude Desktop MCP Mass-Disconnect After Blocking SSH Reboot
- Patching PHP 8.4 Implicit-Nullable Deprecations in Vendor Packages
- Ollama Drops Off Tailscale When Mac Sleeps
- Ollama:
ollama runwith Piped Stdin Bypasses Chat Template + SYSTEM Prompt - rsync over Tailscale: Hung in TCP Teardown After Transfer Completes
- iOS Tailscale Clients Report HostName="localhost" — Breaks /etc/hosts Generators
- macOS: Repeating Alert Tone from Mirrored iPhone Notification
- OBS Studio: Stale Script Paths After Windows Profile Rename
- ClamAV CPU Spike: Safe Scheduling with nice/ionice
- Fedora CA Bundle Missing Symlink — TLS Breaks Fleet-Wide
- Netdata apps-group FD-utilisation false 100% (silenced fleet-wide)
- Ansible: Vault Password File Not Found
- Ansible: ansible.cfg Ignored on WSL2 Windows Mounts
- WSL2: PyTorch Training Deadlocks on Windows Filesystem Checkpoint Saves
- Ansible: SSH Timeout During dnf upgrade on Fedora Hosts
- Ansible: regex_search Capture-Group Argument Fails in set_fact
- Ansible: Ubuntu Reboot Detection Misses Kernel Upgrades
- Fedora Networking & Kernel Troubleshooting
- Systemd Session Scope Fails at Login
- wget/curl: URLs with Special Characters Fail in Bash
- Ansible: Check Mode False Positives in Verify/Assert Tasks
- Ansible Fails with Permission Denied While
ssh <alias>Works (Host Alias Bypass) - Ghost EmailAnalytics Lag Warning — What It Means and When to Worry
- claude-mem: --setting-sources Empty Arg Bug (Claude Code 2.1.x)