Hi All, I have had a request in that is making my head hurt thinking of all the moving parts, so i am asking for advice on the best way of doing the following: Background: We have domain, with MX records pointing to gsuite, domain is @bugs.com I have now been asked to add to add bugs.com to our internal mail systems ( zimbra , which uses poxtfix) that also hosts our other @bunny.com and @bunny-rabbit.com ) All external mail ( i,,e leaving the company ) goes from zimbra to a MTA postfix relay in which we have a transport map the routes @bunny.com and @bunny-rabbit.com to smtp.tunes.com In Gsuite i have set it up so that if someone emails bugs.com and the users is not in gsuite it will get forardward onto the MTA from above , the MTA then does an LDAP lookup on the zimbra server to check for a valid mail account and then the MTA forwards the mail onto imbra What i am having issues getting my head around is to get mail going from zimbra -> mta -> gsuite correctly Any suggestions on the best way to do this? Many many thanks -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html