If you want Zimbra to work on both port 80 and 443, You can use the following commands:
su zimbra –
zmtlsctl both
After this, restart zimbra and you will be able to login to Zimbra on port 80 as well.
PS: Running Zimbra on port 80 is not secure.
Fix a “E: The method driver /usr/lib/apt/methods/http could not be found.” error
Following is an error encountered on Ubuntu 12.04 LTS $ sudo apt-get update E: The method driver /usr/lib/apt/methods/http could not be found. This can be easily fixed by installing apt-transport-https as follows. sudo apt-get install apt-transport-https