User talk:Ranjit
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Disabled Non SSL Authentication in Zimbra on Aimil.
Login in to Zimbra Web Admin Panel:-
1. Go to the Global Setting and Click on MTA Tab and do check mark on TLS Authentication only.
2.Click on IMAP Tab and do check on Enable SSL for IMAP service and uncheck clear text login then uncheck Enable IMAP services respectively.
3.Click on POP Tab and do check on Enable SSL for POP services and uncheck clear text login then uncheck Enable POP services respectively.
4.Go to the Servers and Right click on server's hostname and go to Edit option then click on MTA Tab and do check on TLS Authentication
only.
5.Restart Zimbra Services.
zmcontrol stop
zmcontrol start
and do Respective Setting on outlook and check port 465 and 995 port is working or not.