Here is my file. I noticed the date valid until has 2 extra digits in it.
Code:
zimbra@mail2:~$ cat -v /tmp/ZCSLicense.xml
<ZimbraLicense verifier="ZV2">
<item name="AccountsLimit" value="100"/>
<item name="AttachmentConversionEnabled" value="true"/>
<item name="BackupEnabled" value="true"/>
<item name="CrossMailboxSearchEnabled" value="true"/>
<item name="HierarchicalStorageManagementEnabled" value="true"/>
<item name="ISyncAccountsLimit" value="100"/>
<item name="InstallType" value="regular"/>
<item name="IssuedOn" value="20090402205715Z"/>
<item name="IssuedToEmail" value="email address"/>
<item name="IssuedToName" value="company name"/>
<item name="LicenseId" value="XXXXXXXXXXXXXXXXXXX"/>
<item name="MAPIConnectorAccountsLimit" value="100"/>
<item name="MobileSyncAccountsLimit" value="100"/>
<item name="MobileSyncEnabled" value="true"/>
<item name="ValidFrom" value="20090401000000Z"/>
<item name="ValidUntil" value="xxxxxxxx160000Z"/>
zimbra@mail2:~$