I have been tasked to provide OWA access for external users. Currently there is no external email access besides mobile phone through Goodlink tech. Outlook / OWA is accessible only internally and now there is a requirement to make this available to sales people who are on the road and need to check their mail. I am trying to get the most practical solution which does not require a lot of work. Someone has suggested we need to install a Edge transport server but I was wondering if there is some other way. Right now our email are sent / received through a smtp-relay server. Thanks in advance for you time and suggestions.