9 Replies Latest reply on Jan 11, 2015 12:47 PM by frankm

    550 Invalid Recipient - email not delivered


      We use SaaS Email Protection and have had several instances recently of emails being rejected with 550 Invalid Recipient . The email address used IS definitely valid and can be sent to via Gmail emails etc. Looking at the "message Header" included the message was actually sent to an incorrect mxlogic address. (somewhere in the states when its looked up!). I beleive McAfee is at fault here but how do I find out what to do?