Firewall: only allow specific application server IPs
The article discusses the configuration of a firewall to allow only specific application server IPs for SMTP relay servers. It outlines the differences between self-hosted and cloud SMTP relay options, including their costs and compliance controls. Additionally, it provides technical details on setting up a secure SMTP relay using KumoMTA.
- ▪An SMTP relay server is designed for outbound email delivery optimization.
- ▪Self-hosted SMTP relays offer full control and compliance, while cloud options are easier to set up.
- ▪The article includes technical configurations for KumoMTA to ensure secure email delivery.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3742392) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Dhiraj Chatpar Posted on May 18 Firewall: only allow specific application server IPs #email #smtp #mta What Is an SMTP Relay Server? An SMTP relay accepts outbound email from your applications and delivers it to the final destination mail servers (Gmail, Outlook, Yahoo, etc.). Unlike a local MTA that handles both inbound and outbound, a relay focuses purely on outbound delivery optimization.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
Discussion
0 commentsMore from DEV.to (Top)
