Networking

Setup or Migrate Postfix SMTP relay server on CentOS 6.5

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Scenario: You have a External SMTP relay host configured on older and physical Linux box which you would like to migrate to CentOS host in a virtualized environment. The older Linux box running on Ubuntu 6.06 + Postfix 2.2.10.  You want to migrate it to a virtual machine running CentOS 6.5 + Postfix 2.6.6. OS and Postfix Version details of existing server: root@NSHost1:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:    Ubuntu 6.06.2 LTS Release:        6.06 Codename:       dapper root@NSHost1:~# root@NSHost1:~# postconf -d | grep mail_version mail_version = 2.2.10 root@NSHost1:~# OS and Postfix Version details of new server: […]

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Networking

Configuring On-Premise Linux Postfix SMTP Relay Server to Communicate with Office 365 SMTP Relay for email delivery

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Scenario:   You have various automation and reporting solutions setup that use an On-Premise Linux Postfix SMTP Servers and relays all the automated email through your On-Premise Exchange server.  You are migrating your Microsoft Exchange from On-Premise Exchange server to Office 365.  You are now required to configure all your On-Premise Linux Postfix SMTP Servers to communicate with Office 365 Exchange online for email delivery.   Solution:   To simplify your implementation of migration to Office 365, the most elegant method to support your On-Premise Linux Postfix SMTP Servers is to use Office Connectors. The Office 365 SMTP relay uses […]