Besides turning on HTTPS using zmtlsctl,
-You could use a traffic analyzer/redirector/proxy (requiring another vm/machine).
-You could also change Zimbra's HTTP port:
Quote:
su zimbra
zmprov ms mail.mydomain.com ZimbraMailPort 8080
zmcontrol stop
zmcontrol start
|
After changing the zmtlsctl/zimbraMailMode, zimbraMailPort, or zimbraMailSSLPort you may need to regenerate the zimbraMtaAuthURL:
SMTP Auth Problems - ZimbraWiki