The message was received from an external system for an address which we do not recognise as local. f you are a University user sending mail from an external connection then you should set your mail client up for "off-campus or for mobile use" or "roaming" using the instructions provided by the email configurator. Getting started with email Otherwise, contact us for assistance at postmaster@ed.ac.uk; the problem may be at your end or at ours. This article was published on 2024-10-08