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How to reject mail for unknown users in postfix (local_recipient_maps)

In this tutorial I will cover below topics How to deliver mails only to valid users on localhost How to reject mail for unknown users on localhost with Postfix How to reject unknown local recipients ...

How to restrict IP Address to use postfix smtp relay

In this tutorial we will cover below questions: How can I restrict my postfix relay server to be used by only certain IP Address How to restrict relay with postfix to certain IP Network How ...

3 easy steps to configure gmail smtp relay with postfix

In this tutorial we will configure postfix to use third party GMAIL SMTP Relay server so that our Linux server will be able to send mail to external network using smtp.gmail.com What is SMTP ...

Configure postfix mail server and client with examples (CentOS/RHEL 7/8)

Postfix is a Mail Transport Agent (MTA) responsible for the transfer of e-mails between mail servers using the SMTP protocol. In this article I will share the steps to configure postfix mail server and client ...