I installed tzpush and synched with my Hosted Exchange 2013 provider's server. Unfortunately it turns out that not all 1300 contacts but only 750 contacts got synched. Re-synching did not help.
Another problem is that now all email addresses in Thunderbird's e-mail field got duplicated, e.g. e-mails like
na...@domain.tld
now became
"na...@domain.tld" <na...@domain.tld>
Any help is welcome. Thanks in advance.
Anguel