port-25

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krahlos / mailcow-vps-relay

Mail relay on a public VPS bridging the internet and a Mailcow instance behind CGNAT/DS-Lite over IPv6.

letsencrypt docker ipv6 postfix self-hosted homelab hetzner mailcow smtp-relay cgnat mail-relay ds-lite port-25

Updated May 10, 2026
Shell

A high-performance mass proxy scraping, checking, and SMTP testing toolkit written in Go. Everything from v1 plus a Port 25 SMTP Checker that tests whether proxies can tunnel SMTP traffic through to a mail server on port 25.

cli golang networking high-performance proxy-checker smtp-checker proxy-scraper port-25

Updated May 18, 2026
Go

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port-25

Here are 2 public repositories matching this topic...

krahlos / mailcow-vps-relay

Krainium / Prox-V2

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