have you treid using the standard ldap port instead of the global catalog port?

one thing. try changing your search base to CN=Users,DC=techlead,DC=local Might not be the issue but I seem to remember encountering a time once...

you can't distribute them by that way, but if you have multiple mailbox servers, zimbra will distribute them between the servers. I don't recall...

No running normal updates shouldn't affect zimbra since it's mostly self contained and doesn't depend on very many system packages, and most...

it sounds like it's a password that the account has used before

Are you sure it's not just a sync timing issue? If you just recently modified data in the first domain, the AnotherGAL datasource might not have...

as a bandaid if it's not a lot of users you could try to import into outlook and then use the pst importer to get it into hte account