Set Up SMTP Relay Between 2 Postfix SMTP Servers on CentOS/RHEL

This tutorial will be showing you how to set up SMTP relay between 2 Postfix SMTP servers on CentOS/RHEL.

How to Set Up Postfix SMTP Relay on Debian with Mailjet

How to Set Up Postfix SMTP Relay on Debian with Mailjet - Set up Postfix SMTP relay with Mailjet on Debian to bypass port 25 blocking, IP blacklists and send newsletter with better deliverability.

Use Postfix Transport Map and Relayhost Map For Flexible Email Delivery

Use Postfix Transport Map and Relayhost Map For Flexible Email Delivery - We can configure Postfix transport_maps and sender_dependent_relayhost_maps so that some emails are delivered relay host, other emails are sent directly to recipients.