1373: e-mail delivery issues
Recently we have received and confirmed issues with delivering e-mail to certain domains, so far: adelaide.edu.au applemusic.com arizona.edu benwhale.com biologists.com communications.ssrn.com editorialmanager.com email.arizona.edu flinders.edu.au herts.ac.uk hireright.com hpeprint.com inhousevtm.com insideapple.apple.com ioppublishing.org mail.coinbase.com math.arizona.edu medicalschemes.com mq.edu.au newcastle.edu.au nonzeroratio.com skao.int sussex.ac.uk sydney.edu.au telegram.com uct.ac.za unimelb.edu.au uon.edu.au uow.edu.au uws.edu.au vistaprint.com webofscience.com westernsydney.edu.au woodpartners.com woolcock.org.au The mechanism by which this fails is getting clearer, but we are still figuring out how to deal with this. What most of these domains have in common is that they are hosted by the same service provider (mimecast.com). It appears to be something with the negotiation failing before the mail can be sent, which was no problem before as mails took another route after delivery failure. ...