1 Email outside our network 2 Jackie Powers posted 10 Years Ago I am trying to send e-mail outside our network. All people who are in our office can receive the emails I send but no one who has an e-mail address that is not @mesabaptistchurch.org. Below is the error I get. How do I fix this? Jackie Powers SMTP Exception: Mailbox unavailable. The server response was: 5.7.1 Unable to relay
Derek Mangrum 10 years ago For Exchange 2013, this looks to be what needs to be done: http://www.petenetlive.com/KB/Article/0000891.htm