Zimbra repo key issue & solution for Ubuntu

[Randy Leiker]

Hi Everyone, 

I noticed on all of the Ubuntu 20.04 servers with Zimbra installed that I maintain that running "sudo apt update" recently began returning warnings like these: 

Err:1 https://repo.zimbra.com/apt/onlyoffice focal InRelease 
The following signatures were invalid: EXPKEYSIG 5234D2B73B6996C7 Zimbra Packaging Services <packaging-devel at zimbra.com> 
Err:2 https://repo.zimbra.com/apt/87 focal InRelease 
The following signatures were invalid: EXPKEYSIG 5234D2B73B6996C7 Zimbra Packaging Services <packaging-devel at zimbra.com> 
Err:3 https://repo.zimbra.com/apt/1000 focal InRelease 
The following signatures were invalid: EXPKEYSIG 5234D2B73B6996C7 Zimbra Packaging Services <packaging-devel at zimbra.com> 
Err:4 https://repo.zimbra.com/apt/1000-ne focal InRelease 
The following signatures were invalid: EXPKEYSIG 5234D2B73B6996C7 Zimbra Packaging Services <packaging-devel at zimbra.com> 

In checking the Zimbra repo key with "sudo apt-key list" and it does not appear the key expired, so it is not clear to me what happened to it: 

/etc/apt/trusted.gpg 
-------------------------- 
pub rsa4096 2015-03-19 [SC] 
254F 9170 B966 D193 D6BA D300 D5CE F8BF 9BE6 ED79 
uid [ unknown] Zimbra Packaging Services <packaging-devel at zimbra.com> 
sub rsa4096 2015-03-19 [E] 

Here is how I fixed it: 

sudo apt-key del 254F9170B966D193D6BAD300D5CEF8BF9BE6ED79 

Copy the key import script from: [ https://wiki.zimbra.com/wiki/Zimbra_Collaboration_repository#Adding_the_Zimbra_Repository_key | https://wiki.zimbra.com/wiki/Zimbra_Collaboration_repository#Adding_the_Zimbra_Repository_key ] and run it: 

sudo ./zimbra_gpg.sh 
sudo apt update 

And all works correctly again: 

Hit:1 http://us.archive.ubuntu.com/ubuntu focal InRelease 
Hit:2 https://repo.zimbra.com/apt/87 focal InRelease 
Hit:3 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease 
Hit:4 https://repo.zimbra.com/apt/1000 focal InRelease 
Hit:5 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease 
Hit:6 http://us.archive.ubuntu.com/ubuntu focal-security InRelease 
Hit:7 https://repo.zimbra.com/apt/1000-ne focal InRelease 
Reading package lists... Done 
Building dependency tree 
Reading state information... Done 
All packages are up to date. 


Randy Leiker ( randy at skywaynetworks.com ) 
Skyway Networks, LLC 

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