restore default zimbra proxy values 8.8.12

[eaperezh]

Good evening.
I have the following Zizmbra server that is(was) working perfectly and somebody unconfigured the proxy part.
I would like to restore default zimbra proxy values.
I have a single server centos 7.8 setup. inside my lan.
Release 8.8.12_GA_3794.RHEL7_64_20190329045002 RHEL7_64 FOSS edition, Patch 8.8.12_P6.

please advise.

[phoenix]

Have you looked at any of the wiki articles on the subject.