Modify the definition of Default Global Address List by adsiedit.msc
The Default Global Address List includes all recipients in default mailbox database.
Both attributes of msExchQueryFilter and PurportedSearch:
(&(&(mailNickname=*) (homeMDB=CN=Mailbox Database,CN=First Storage Group,CN=InformationStore,CN=USA,CN=Servers,CN= Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=First Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=Terrace,DC=com)) ((objectClass=user)(objectClass=contact)(objectClass=msExchSystemMailbox)(objectClass=msExchDynamicDistributionList)(objectClass=group)(objectClass=publicFolder)))
Before you configure a outlook client, I restore the default value of PurportedSearch. If you don't, the Outlook client cannot find the user name in the default address list unless the user is from the default mailbox database. After the outlook client is configured, I set the customized settings.
You can do the similiar modification for Shaw, Telus, and Rogers global address list, so Shaw global address list includes all recipients in Shaw Database.
New-AddressList -Name 'ShawAddress' -IncludedRecipients 'AllRecipients' -ConditionalCompany 'Shaw' -Container '\'
Update-AddressList 'ShawAddress'
New-AddressList -Name 'RogersAddress' -IncludedRecipients 'AllRecipients' -ConditionalCompany 'Rogers' -Container '\'
Update-AddressList 'RogersAddress'
New-AddressList -Name 'TelusAddress' -IncludedRecipients 'AllRecipients' -ConditionalCompany 'Telus' -Container '\'
Update-AddressList 'TelusAddress'
new-OfflineAddressBook -Name 'TelusOfflineAddress' -Server 'USA' -AddressLists '\TelusAddress' -PublicFolderDistributionEnabled $true -VirtualDirectories 'USA\OAB (Default Web Site)'
new-OfflineAddressBook -Name 'ShawOfflineAddress' -Server 'USA' -AddressLists '\ShawAddress' -PublicFolderDistributionEnabled $true -VirtualDirectories 'USA\OAB (Default Web Site)'
new-OfflineAddressBook -Name 'RogersOfflineAddress' -Server 'USA' -AddressLists '\RogersAddress' -PublicFolderDistributionEnabled $true -VirtualDirectories 'USA\OAB (Default Web Site)'
Update-OfflineAddressBook 'TelusOfflineAddress'
Update-OfflineAddressBook 'ShawOfflineAddress'
Update-OfflineAddressBook 'RogersOfflineAddress'
Update-OfflineAddressBook 'Default Offline Address Book'
Set-MailboxDatabase -Identity 'Mailbox database' -OfflineAddressBook 'Default Offline Address Book'
Set-MailboxDatabase -Identity 'Shaw database' -OfflineAddressBook 'ShawOfflineAddress'
Set-MailboxDatabase -Identity 'Telus database' -OfflineAddressBook 'TelusOfflineAddress'
Set-MailboxDatabase -Identity 'Rogers database' -OfflineAddressBook 'RogersOfflineAddress'