Sorry to bother again with this question..but I have been trying to find a clear answer and I couldn't find any valid way to use external MTA with Zimbra 8.5 (with authentication of course).
Even the docummentation on the Zimbra Wiki says that the new version does not support the usual approach (which has worked fine for a Zimbra 8.07 in my tests).
Could someone explain to me how to setup an external MTA with authentication under Zimbra 8.5 step by step?? I simply cannot find the steps for the new version as for the previous ones on the wiki (Outgoing
SMTP Authentication - Zimbra :: Wiki) . Also neither an internet search retrieved valid answers. On the other hand, this forum thread looked related, but I need all the steps since I don't know what I am missing (The server seems to be attempting to relay the emails without authenticating).
Thanks in advance!