Connecting Ubuntu / Mint to exchange mail and calendar

Assumptions and pre-requisites. This article assumes the Linux user has the following installed: An Ubuntu derived distribution such as Ubuntu itself, Linux Mint, and so on The email client used is evolution, installed via the following packages and their dependencies: evolution evolution-common evolution-data-server-common evolution-mapi evolution-ews evolution-data-server-goa evolution-plugins gnome-online-accounts gnome-control-center Setup Details Open the system menu … Continue reading Connecting Ubuntu / Mint to exchange mail and calendar

Email Error: 450 Client host rejected

A couple of our clients sometimes have issues when sending email, with a returned non-delivery report stating the following: Peer server rejected email: 450 Client host rejected: 'cannot find your hostname' It turns out this is a very strict check (usually performed by postfix), that is controlled via the directive reject_unknown_client_hostname in the postfix configuration. The documentation … Continue reading Email Error: 450 Client host rejected