Hello, I have a little problem it just started happening yesterday before I put the 5.0.12 upgrade on the server. When any of my users send email out to lets say firstname.lastname@example.org it shows a 'critical error. Message not sent; one or more addresses not accepted. Rejected addresses : email@example.com. I am new to zimbra and only have been using this for a few weeks. We can send mail to members of the GAL and recieve mail in from firstname.lastname@example.org. Help?